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View Full Version : AncestryDNA results vs GEDmatch etc..



NewAlbion
08-15-2016, 10:33 PM
Alright, I know this is an inexact science but I've heard, not officially, but through the grapevine, that AncestryDNA ethnicity results are worse than 23andme which would make sense right ? I mean you get what you pay for.

My know ancestry is from Donegal, Scotland, England South-midland Ireland and Alsace-Lorraine France. My paternal is Donegal, Scotland, and England but my Dad just looks simply Scottish and his father , from Donegal looked Scottish to me too (definitely could see obvious Norse imprint etc...) and my paternal is Southern-midland Ireland + Southern Germanic (Alsace-Lorraine France).

So ancestry DNA has my results at 52% Irish like 36% like 6 or 8% Norse and the rest seemingly statistical white noise (they are not all or most less than 1% but that it still like noise to me, personally).

Now, this seems like nonsense. Scots have viking DNA but there is no reason for that to show up as part of my ethnicity chart. Mainland Scots are halfway genetically between the native Irish/Welsh, on the one hand, and the Germanics (Vikings and Anglo-Saxons or English) on the other so how much does it makes sense to say 52% Irish ? Now my maternal line could be similar to the Cornish because my irish grandfather was not really far outside the pale if outside it at all nor the North_Atlantic facade and the Germanic from Alsace-Lorraine would be similar enough to the Anglo-Saxons to place those genetics close to Cornwall but not far enough as Devon and definitely not East-Anglia.

Basically, GEDmatch Eutest is telling me what I want to hear and AncestryDNA is not.

Here are my GEDmatch results from the Eutest (I don't have any amerindian or South or Central Asian ancestry so no k13 and k15 and if I am not mistaken the average population distance is 15) :



Kit Num: ******
Threshold of components set to 1.000
Threshold of method set to 0.25%
Personal data has been read. 20 approximations mode.
Gedmatch.Com
EUtest 4-Ancestors Oracle
This program is based on 4-Ancestors Oracle Version 0.96 by Alexandr Burnashev.
Questions about results should be sent to him at: [email protected]
Original concept proposed by Sergey Kozlov.
Many thanks to Alexandr for helping us get this web version developed.

EUtest Oracle population reference data revised 06 Nov 2012.

Admix Results (sorted):

# Population Percent
1 ATLANTIC 29.96
2 NORTH-CENTRAL_EURO 26.77
3 SOUTH_BALTIC 12.91
4 WEST_MED 10.57
5 EAST_EURO 10.27
6 WEST_ASIAN 4.44
7 EAST_MED 2.47
8 SOUTH_ASIAN 1.59


Finished reading population data. 78 populations found.
13 components mode.

--------------------------------

Least-squares method.

Using 1 population approximation:
1 Orcadian @ 2.572646
2 Cornish @ 2.927963
3 IE @ 2.939580
4 Scottish @ 3.636564
5 English @ 4.970222
6 NL @ 5.760987
7 West_&_Central_German @ 6.989939
8 DK @ 7.561948
9 NO @ 9.355514
10 South_&_Central_Swedish @ 10.225418
11 FR @ 12.779758
12 North_Swedish @ 14.188993
13 AT @ 14.855093
14 HU @ 20.764002
15 ES @ 21.047228
16 PT @ 21.158691
17 South_Finnish @ 23.622814
18 Serbian @ 23.986607
19 French_Basque @ 25.100336
20 North_Italian @ 25.704790

Using 2 populations approximation:
1 50% Cornish +50% Scottish @ 1.968661


Using 3 populations approximation:
1 50% Cornish +25% Orcadian +25% Scottish @ 1.857162


Using 4 populations approximation:
1 Cornish + Cornish + Orcadian + Scottish @ 1.857162
2 Cornish + Cornish + IE + Scottish @ 1.916898
3 Cornish + NL + Scottish + Scottish @ 1.940600
4 Cornish + Cornish + Scottish + Scottish @ 1.968661
5 Cornish + Cornish + IE + Orcadian @ 1.979756
6 Cornish + English + Scottish + Scottish @ 2.012911
7 Cornish + Scottish + Scottish + West_&_Central_German @ 2.030463
8 Cornish + English + IE + Scottish @ 2.040028
9 Cornish + Cornish + Orcadian + Orcadian @ 2.049928
10 Cornish + Cornish + IE + IE @ 2.053847
11 Cornish + IE + NL + Scottish @ 2.059194
12 Cornish + Orcadian + Orcadian + Scottish @ 2.062128
13 Cornish + IE + Orcadian + Orcadian @ 2.097064
14 Cornish + IE + Orcadian + Scottish @ 2.106331
15 Cornish + English + Orcadian + Scottish @ 2.109261
16 Cornish + Cornish + Cornish + Scottish @ 2.117296
17 Cornish + Orcadian + Orcadian + Orcadian @ 2.133714
18 Cornish + IE + Scottish + West_&_Central_German @ 2.159240
19 Cornish + IE + IE + Orcadian @ 2.173518
20 Cornish + NL + Orcadian + Scottish @ 2.174028

Done.

Elapsed time 0.0417 seconds.

So would I be mistaken if I just identified as Scottish or a mix of Scottish or cornish even the it wouldn't be necessarily 100% exact given the my population distance with the average being 15 ? I mean traditionally the Irish have nothing in Common with the Germanics and while I recognize I have some Germanic heritage identifying as Scottish or Scottish+Cornish allows me to aknowledge my Germanic ancestry while still identifying as Anglo-Celtic.This could be selection bias on my part as I like the GEDmatch results better. Please I'm just trying to figure out my ethnicity and this is driving me a bit crazy here. I'm a newbie to all this stuff compared to some of you guys here so I could use some help, thanks in advance.

P.S.

BTW, if you guys want me to contrast k13 and k15 here I will but I don't see the point but maybe you could enlighten me if you need it.

MyAnthropologies
08-16-2016, 02:44 AM
Hmmm, that's really tough to answer. There are a lot of anglofied Irish people who think they are ethnically Brits and get surprised when they see DNA results showing otherwise. The same happens vice versa. Sounds like you're mostly from the British Isles which makes sense according to your rumored background.

As far as your identity, a DNA test should never change that. You are who you are.

NewAlbion
08-16-2016, 09:53 AM
Hmmm, that's really tough to answer. There are a lot of anglofied Irish people who think they are ethnically Brits and get surprised when they see DNA results showing otherwise. The same happens vice versa. Sounds like you're mostly from the British Isles which makes sense according to your rumored background.

As far as your identity, a DNA test should never change that. You are who you are.

Not to be rude but there seems to be some kind of liberal agenda against using these tests to identify primarily with one tribe or ethnicity. It won't change who am I am profoundly either way : I'll still identify as Anglo-Celtic rather than Anglo-Saxon. I just prefer the Scots and Cornish over the Irish because of the history of invention and science in these regions comparatively speaking. I'm not saying that means I am going to necessarily make any scientific breakthroughs or major inventions but still... the Scots etc.. are brother Gods of the Irish. Anyway, even if ancestryDNA is correct that could still mean I am like a highland Scot rather than Irish or a lowland Scot. Honestly, the true Irish should have nothing in common with the Germanics that is another reason why I have problems identifying as Irish. The companies like AncestryDNA seem to have a liberal agenda for not identifying with one tribe e.g. British, Scots, or German or whatever one's closest ethnic analogue may be.

firemonkey
08-16-2016, 12:23 PM
Basically, GEDmatch Eutest is telling me what I want to hear and AncestryDNA is not.

I am very doubtful that this is the way to approach things, ie ignoring that which doesn't fit in with what you want it to be.
If you have a fixed idea of your ancestry then why do autosomal testing in the first place?

AnnieD
08-16-2016, 02:50 PM
I think that much remains to be seen in regard to Irish genetics & admixture affinities to their neighbors & other NW populations. The most comprehensive British Au genetics project to date, People of British Isles Welcomme Trust study, included only N.
Ireland. This region may be "corrupted", however, by Anglo Planters & Scottish Ulster. LOL! 😊 Although the Irish Atlas DNA project is still underway, preliminary results are yielding many similarities with Scottish and British in general. There have also been several fully Irish posting their Eurogenes K13 results showing primary matches with Dutch, sometimes higher than other British populations.

Personally, however, I see some striking differences in cultural heritage, with Ireland offering some extraordinary music & literature traditions over perhaps a more pragmatic Scottish tradition.It will be interesting to see if DNA studies bridge the gap, or widen it. 😊

NewAlbion
08-16-2016, 03:57 PM
I am very doubtful that this is the way to approach things, ie ignoring that which doesn't fit in with what you want it to be.
If you have a fixed idea of your ancestry then why do autosomal testing in the first place?

True, but I've heard, online, so it may not be true, that of all the commerical testing companies AncestryDNA is the least accurate. Basically, they just want to sell you a subscription to the rest of the ancestry or geneology portion of their website and the testing is just a small part of what they do compared to other companies that are more or less dedicated to the DNA testing portion. It is easy to see their strategy it is like they know that many people testing are looking for small possibly unknown surprising parts of their ancestry like with me it says 6% or 8% Scandinavian but that is just nonsense the the 25% Orcadian 4 squared result, from GEDmatch, makes more sense since I know my father is Scottish ethnically and the Orkneys have significant Norse input etc... I think ancestryDNA is bullshit more or less just a marketing ploy. I mean I don't literally think on my maternal side that I'm cornish just that I have possibly a closer ethnic affinity to them than the Irish. The latter may or may not be true but what we do know is the real Irish should have nothing in common with the Germanics historically speaking or traditionally speaking.

Kiln
08-20-2016, 08:28 AM
Colonial English plus a little German.

Ancestry is garbage.

52% continental? What a joke!

http://i.imgur.com/4Ln2AVG.png


Eurogenes nails it.

http://i.imgur.com/rHDMJnx.png

cvolt
08-20-2016, 11:33 AM
I agree that Ancestry is terrible. Gedmatch gives more realistic results, or what you want to hear, I suppose.

rms2
08-20-2016, 12:42 PM
Everyone has an opinion.

For me, Ancestry has proven to be pretty accurate. Family Finder's myOrigins, however, is in serious need of an update.

It seems to me comparing Ancestry or Family Finder to Gedmatch is kind of an apples-to-oranges exercise. The results are not couched in the same terms, which of course, leaves things wide open for whatever one's preferred interpretation is.

geebee
08-20-2016, 04:06 PM
I am not necessarily willing to simply dismiss Ancestry's results as "terrible". But here's one thing 23andMe does that Ancestry does not -- nor does FTDNA, for that matter. They show you the breakdown of your ancestry on a chromosome-by-chromosome basis.

This makes comparisons with others quite easy. So I'm able to tell, for example, if someone I match at a certain chromosome also shows the same ethnicity at that same place. (Because my father has also been tested, I can almost always tell which side the match is on.)

When it comes to matches, Ancestry does have some useful tools -- including "hints", sometimes, that point to a common ancestor or ancestors. (These might or might not be the ones from whom the shared DNA was inherited, however; although they do also have a beta feature called DNA Circles.) But the lack of any sort of chromosome browser is a serious deficiency to Ancestry, as far as I'm concerned.

I suppose we're often tempted to see "best" and "worst" in terms of what best fits our preconceptions or preferences. In my opinion, Ancestry is not the worst company when it comes to ethnicity analysis. I'd say that FTDNA is. But all that really means is that I see FTDNA's MyOrigins as being the least accurate for me.

In part, I base that on what I believe is their misinterpretation of my Native American ancestry -- which virtually every other calculator has identified (including 23andMe, Ancestry, and numerous GEDmatch calculators) -- as East Asian. This ancestry is also reflected in my tree, with documentation; and in the trees of a great many of my matches. And, MyOrigins did manage to identify my brother's Native American ancestry as such.

Compounding the problem, they only let you rank your matches in MyOrigins by your top three top level ethnicities. In my case, that means European, Central/South Asia, and Middle Eastern. Since East Asian is 4th, I can't rank my matches according to that category.

My brother only has three at the top level, with "New World" being the third (and the same percentage as my "East Asian". So he can rank according to any of them. As one might expect, at least half my brother's matches are also my matches. They include a confirmed 3rd cousin who descends from the same Native American ancestor my brother and I do.

And this gets back to how handy that chromosome-by-chromosome breakdown of ancestral origin is at 23andMe. FTDNA doesn't have it, and should. But Ancestry doesn't even have any sort of chromosome browser. If you want to say it's the worst, it should be for that reason, rather than for their ancestry analysis.

jpb
08-20-2016, 04:21 PM
Colonial English plus a little German.
Kiln, we have a very similar dilemma. I am 5/8 Colonial, 1/4 German, and 1/8 Irish and I get:
51% Europe West
24% Ireland
7% Scandinavia
5% Great Britain
6% Europe East
4% Italy/Greece
2% Middle East
<1% Iberian Peninsula.

Interesting you have so much Iberian.

jpb
08-20-2016, 04:26 PM
However, Eurogenes doesn't nail it for me. My number one population is West_German, followed by various Scandiavian populations.

geebee
08-20-2016, 04:28 PM
Since the thread specifically mentions Gedmatch, the only thing I can say there is that every calculator is different, so you can't really talk about Gedmatch generally. I consider some of the calculators to be pretty good, but others are perhaps not so good.

Some of the calculators are even designed for people of certain principal ethnicities, and won't work as well for others.

JMcB
08-20-2016, 04:38 PM
I haven't used Gedmatch or Ancestry so I can't comment on them but from what I know My Origins seems to have read me just about right. Although, I do wonder about one aspect of their results.

The vast majority of my known ancestry is Scots, Irish and English. However, my mother's paternal Grandfather was half Italian and half German. Beyond that I can't delineate because our knowledge of that line stops in the 1830s with his German mother Anna.

So here are my results.

11093

The one thing I wonder about is the Southern European reading which seems a lot higher than I would have thought. Maybe they're picking up a more ancient reading, which I have heard some suggest that they do. Or perhaps, through the wonders of recombination, I'm more Italian than I thought. ;-)

Kiln
08-21-2016, 06:31 AM
Kiln, we have a very similar dilemma. I am 5/8 Colonial, 1/4 German, and 1/8 Irish and I get:
51% Europe West
24% Ireland
7% Scandinavia
5% Great Britain
6% Europe East
4% Italy/Greece
2% Middle East
<1% Iberian Peninsula.

Interesting you have so much Iberian.

My Iberian seems a few points high.

I can't find it in family tree either.



I haven't used Gedmatch or Ancestry so I can't comment on them but from what I know My Origins seems to have read me just about right. Although, I do wonder about one aspect of their results.

The vast majority of my known ancestry is Scots, Irish and English. However, my mother's paternal Grandfather was half Italian and half German. Beyond that I can't delineate because our knowledge of that line stops in the 1830s with his German mother Anna.

So here are my results.

11093

The one thing I wonder about is the Southern European reading which seems a lot higher than I would have thought. Maybe they're picking up a more ancient reading, which I have heard some suggest that they do. Or perhaps, through the wonders of recombination, I'm more Italian than I thought. ;-)

http://i.imgur.com/u3r3pOX.png

Celts have some connection to Iberia.

sktibo
09-16-2016, 02:23 AM
I'm one of those who also found my Ancestry test to be very disappointing, but I thought the FTDNA my origins lined up pretty well with the paper trail.
I wonder why it is that Ancestry will do so well for one person but not another, or the same thing with MyOrigins? I could be wrong but it appears to me that people generally have the least complaints about 23andme.

Jessie
09-16-2016, 04:28 AM
Not to be rude but there seems to be some kind of liberal agenda against using these tests to identify primarily with one tribe or ethnicity. It won't change who am I am profoundly either way : I'll still identify as Anglo-Celtic rather than Anglo-Saxon. I just prefer the Scots and Cornish over the Irish because of the history of invention and science in these regions comparatively speaking. I'm not saying that means I am going to necessarily make any scientific breakthroughs or major inventions but still... the Scots etc.. are brother Gods of the Irish. Anyway, even if ancestryDNA is correct that could still mean I am like a highland Scot rather than Irish or a lowland Scot. Honestly, the true Irish should have nothing in common with the Germanics that is another reason why I have problems identifying as Irish. The companies like AncestryDNA seem to have a liberal agenda for not identifying with one tribe e.g. British, Scots, or German or whatever one's closest ethnic analogue may be.

I would be more likely to go with what a company like Ancestry says or 23&Me. Gedmatch is just a secondary application that uses calculators to place you in populations closest to your results.

I'm fully Irish and I've used all 3 companies.

My results from Ancestry were

91% Ireland
Trace Regions
3% Europe East
2% Europe West
1% Scandinavia
1% European Jewish
2% Great Britain (forgot to add this)

Most people from the UK will get a percentage of Ireland in their results and it doesn't necessarily translate to actual Irish ancestry.

My Eurogenes K13 however has my top population as North Dutch and I come out as 50% Norwegian. So while Gedmatch is usuful and entertaining it can't really be used in place of something like 23andMe, FTDNA or Ancestry. What people fail to realise is that whether people are "Celtic" or "Germanic" these are language groups and all people in Northwest Europe are very similar genetically. Regarding whether the Irish have contributed less to science is more down to historical reasons than genetics. A history book would be more informative in looking at reasons for why some populations had more opportunities than others in certain areas.

Jessie
09-16-2016, 04:38 AM
Here is my EU test so people can compare.

Admix Results (sorted):


# Population Percent
1 ATLANTIC 29.05
2 NORTH-CENTRAL_EURO 28.74
3 SOUTH_BALTIC 14.54
4 EAST_EURO 11.64
5 WEST_MED 8.13
6 WEST_ASIAN 6.85
7 EAST_MED 1.05

Single Population Sharing:


# Population (source) Distance
1 Orcadian 3.19
2 IE 3.78
3 Scottish 4.07
4 English 5.65
5 NL 6.04
6 DK 6.08
7 Cornish 6.09
8 NO 6.34
9 West_&_Central_German 6.73
10 South_&_Central_Swedish 7.01
11 North_Swedish 10.75
12 AT 13.82
13 FR 14.7
14 HU 18.52
15 South_Finnish 19.56
16 Serbian 21.37
17 PT 22.12
18 PL 22.12
19 ES 22.35
20 EE 24.12

Mixed Mode Population Sharing:


# Primary Population (source) Secondary Population (source) Distance
1 68% Scottish + 32% South_&_Central_Swedish @ 2.7
2 66.1% Scottish + 33.9% NO @ 2.85
3 83.2% Orcadian + 16.8% South_&_Central_Swedish @ 2.92
4 72.8% IE + 27.2% South_&_Central_Swedish @ 2.93
5 83.7% Orcadian + 16.3% NO @ 3
6 97.7% Orcadian + 2.3% Lezgin @ 3
7 96% Orcadian + 4% EE @ 3.03
8 96.8% Orcadian + 3.2% LIT @ 3.04
9 92% Orcadian + 8% North_Swedish @ 3.06
10 98.5% Orcadian + 1.5% GE @ 3.07
11 97.2% Orcadian + 2.8% Belorussian @ 3.1
12 72.1% IE + 27.9% NO @ 3.11
13 97.6% Orcadian + 2.4% Northwest_Russian @ 3.11
14 96.9% Orcadian + 3.1% PL @ 3.11
15 97.2% Orcadian + 2.8% East_Finnish @ 3.11
16 97.3% Orcadian + 2.7% West_Russian @ 3.12
17 96.7% Orcadian + 3.3% South_Finnish @ 3.12
18 97.5% Orcadian + 2.5% UA @ 3.13
19 97.7% Orcadian + 2.3% Ukrainian-Russian @ 3.13
20 98% Orcadian + 2% Erzya @ 3.13

Using 2 populations approximation:
1 50% Orcadian +50% Orcadian @ 3.586883


Using 3 populations approximation:
1 50% IE +25% Scottish +25% South_&_Central_Swedish @ 3.138446


Using 4 populations approximation:
1 IE + Scottish + Scottish + South_&_Central_Swedish @ 3.093390
2 Orcadian + Scottish + Scottish + South_&_Central_Swedish @ 3.097898
3 IE + Orcadian + Scottish + South_&_Central_Swedish @ 3.126189
4 IE + IE + Scottish + South_&_Central_Swedish @ 3.138446
5 Orcadian + Orcadian + Scottish + South_&_Central_Swedish @ 3.172408
6 Scottish + Scottish + Scottish + South_&_Central_Swedish @ 3.184580
7 NO + Orcadian + Scottish + Scottish @ 3.242635
8 IE + IE + Orcadian + South_&_Central_Swedish @ 3.273401
9 NO + Orcadian + Orcadian + Scottish @ 3.274760
10 IE + NO + Orcadian + Scottish @ 3.277389
11 IE + NO + Scottish + Scottish @ 3.286388
12 IE + IE + IE + South_&_Central_Swedish @ 3.298187
13 IE + Orcadian + Orcadian + South_&_Central_Swedish @ 3.313722
14 IE + IE + NO + Scottish @ 3.334099
15 NO + Scottish + Scottish + Scottish @ 3.356885
16 English + Scottish + Scottish + South_&_Central_Swedish @ 3.367349
17 Orcadian + Orcadian + Orcadian + South_&_Central_Swedish @ 3.401448
18 IE + NO + Orcadian + Orcadian @ 3.418174
19 IE + IE + NO + Orcadian @ 3.420750
20 NO + Orcadian + Orcadian + Orcadian @ 3.460329

Jessie
09-16-2016, 05:41 AM
My Iberian seems a few points high.

I can't find it in family tree either.




http://i.imgur.com/u3r3pOX.png

Celts have some connection to Iberia.

A common misconception by people. I'm not sure where it comes from but the rule appears to be geographic proximity. If you come from a population closer to Spain / Portugal you are likely to have higher Iberian and this goes for things like Scandinavian, Europe West etc. Irish and Scots have less Iberian than English and also if you are German you are likely to have higher Iberian. So the "Celtic" thing is a bit inaccurate.

I think the hardest thing for people is to let go of some old and outdated information regarding populations. Of course some of these things never die no matter what the evidence shows.

sktibo
09-16-2016, 05:45 AM
I would be more likely to go with what a company like Ancestry says or 23&Me. Gedmatch is just a secondary application that uses calculators to place you in populations closest to your results.

I'm fully Irish and I've used all 3 companies.

My results from Ancestry were

91% Ireland
Trace Regions
3% Europe East
2% Europe West
1% Scandinavia
1% European Jewish

Most people from the UK will get a percentage of Ireland in their results and it doesn't necessarily translate to actual Irish ancestry.

My Eurogenes K13 however has my top population as North Dutch and I come out as 50% Norwegian. So while Gedmatch is usuful and entertaining it can't really be used in place of something like 23andMe, FTDNA or Ancestry. What people fail to realise is that whether people are "Celtic" or "Germanic" these are language groups and all people in Northwest Europe are very similar genetically. Regarding whether the Irish have contributed less to science is more down to historical reasons than genetics. A history book would be more informative in looking at reasons for why some populations had more opportunities than others in certain areas.

Hi Jessie,

I did my ancestryDNA test recently, and to my surprise my only non-trace regions were Britain at 73% and Ireland at 6%. I expected a much greater Irish component given my ancestors include many Gaelic / Highland Scottish as well as Welsh speaking people. My Gedmatch results for the ancestry kit are:

# Population Percent
1 ATLANTIC 27.26
2 NORTH-CENTRAL_EURO 25.27
3 SOUTH_BALTIC 14.91
4 WEST_MED 12.13
5 EAST_EURO 11.02
6 WEST_ASIAN 6.34
7 SIBERIAN 2.08


Finished reading population data. 78 populations found.
13 components mode.

--------------------------------

Least-squares method.

Using 1 population approximation:
1 Orcadian @ 5.320445
2 IE @ 5.557007
3 Cornish @ 5.909720
4 NL @ 6.221287
5 English @ 7.090277
6 West_&_Central_German @ 7.103646
7 Scottish @ 7.127876
8 DK @ 8.676942
9 NO @ 8.865813
10 South_&_Central_Swedish @ 9.470847
11 North_Swedish @ 12.807658
12 AT @ 13.192289
13 FR @ 13.201672
14 HU @ 18.127720
15 South_Finnish @ 21.391369
16 PT @ 21.590019
17 ES @ 21.643776
18 Serbian @ 22.437931
19 PL @ 23.638054
20 North_Italian @ 25.269634

Using 2 populations approximation:
1 50% IE +50% NL @ 4.867750


Using 3 populations approximation:
1 50% IE +25% IE +25% West_&_Central_German @ 4.856452


Using 4 populations approximation:
1 HU + IE + IE + IE @ 4.142177
2 HU + IE + IE + Scottish @ 4.266030
3 AT + IE + IE + IE @ 4.293591
4 HU + IE + IE + Orcadian @ 4.305387
5 AT + IE + IE + Orcadian @ 4.401197
6 HU + IE + Orcadian + Scottish @ 4.437197
7 FR + IE + IE + North_Swedish @ 4.482569
8 HU + IE + Scottish + Scottish @ 4.484679
9 AT + IE + IE + Scottish @ 4.494554
10 HU + IE + Orcadian + Orcadian @ 4.505452
11 Cornish + HU + IE + IE @ 4.518355
12 AT + IE + Orcadian + Orcadian @ 4.542547
13 FR + IE + IE + South_&_Central_Swedish @ 4.571366
14 FR + IE + North_Swedish + Scottish @ 4.606003
15 Cornish + HU + IE + Scottish @ 4.611389
16 AT + IE + Orcadian + Scottish @ 4.612475
17 FR + IE + North_Swedish + Orcadian @ 4.627069
18 AT + Cornish + IE + IE @ 4.627154
19 HU + Orcadian + Orcadian + Scottish @ 4.644990
20 English + HU + IE + IE @ 4.645694

So while they're definitely not exact, our results seem similar enough that I figure I'd have at least a decent fraction of Irish showing on my ethnicity prediction. I'm writing this as support for the argument against AncestryDNA. (But don't get me wrong for some folks it seems fine, after all it did a great job with your prediction).

Jessie
09-16-2016, 06:05 AM
Hi Jessie,

I did my ancestryDNA test recently, and to my surprise my only non-trace regions were Britain at 73% and Ireland at 6%. I expected a much greater Irish component given my ancestors include many Gaelic / Highland Scottish as well as Welsh speaking people. My Gedmatch results for the ancestry kit are:

# Population Percent
1 ATLANTIC 27.26
2 NORTH-CENTRAL_EURO 25.27
3 SOUTH_BALTIC 14.91
4 WEST_MED 12.13
5 EAST_EURO 11.02
6 WEST_ASIAN 6.34
7 SIBERIAN 2.08


Finished reading population data. 78 populations found.
13 components mode.

--------------------------------

Least-squares method.

Using 1 population approximation:
1 Orcadian @ 5.320445
2 IE @ 5.557007
3 Cornish @ 5.909720
4 NL @ 6.221287
5 English @ 7.090277
6 West_&_Central_German @ 7.103646
7 Scottish @ 7.127876
8 DK @ 8.676942
9 NO @ 8.865813
10 South_&_Central_Swedish @ 9.470847
11 North_Swedish @ 12.807658
12 AT @ 13.192289
13 FR @ 13.201672
14 HU @ 18.127720
15 South_Finnish @ 21.391369
16 PT @ 21.590019
17 ES @ 21.643776
18 Serbian @ 22.437931
19 PL @ 23.638054
20 North_Italian @ 25.269634

Using 2 populations approximation:
1 50% IE +50% NL @ 4.867750


Using 3 populations approximation:
1 50% IE +25% IE +25% West_&_Central_German @ 4.856452


Using 4 populations approximation:
1 HU + IE + IE + IE @ 4.142177
2 HU + IE + IE + Scottish @ 4.266030
3 AT + IE + IE + IE @ 4.293591
4 HU + IE + IE + Orcadian @ 4.305387
5 AT + IE + IE + Orcadian @ 4.401197
6 HU + IE + Orcadian + Scottish @ 4.437197
7 FR + IE + IE + North_Swedish @ 4.482569
8 HU + IE + Scottish + Scottish @ 4.484679
9 AT + IE + IE + Scottish @ 4.494554
10 HU + IE + Orcadian + Orcadian @ 4.505452
11 Cornish + HU + IE + IE @ 4.518355
12 AT + IE + Orcadian + Orcadian @ 4.542547
13 FR + IE + IE + South_&_Central_Swedish @ 4.571366
14 FR + IE + North_Swedish + Scottish @ 4.606003
15 Cornish + HU + IE + Scottish @ 4.611389
16 AT + IE + Orcadian + Scottish @ 4.612475
17 FR + IE + North_Swedish + Orcadian @ 4.627069
18 AT + Cornish + IE + IE @ 4.627154
19 HU + Orcadian + Orcadian + Scottish @ 4.644990
20 English + HU + IE + IE @ 4.645694

So while they're definitely not exact, our results seem similar enough that I figure I'd have at least a decent fraction of Irish showing on my ethnicity prediction. I'm writing this as support for the argument against AncestryDNA. (But don't get me wrong for some folks it seems fine, after all it did a great job with your prediction).

I think sometimes people take the names of the components too literally. The Great Britain result doesn't translate to not having any "Celtic" or pre-Anglo-Saxon ancestry. You obviously have the bulk of your ancestry from the British Isles so the results are accurate. It is really difficult to separate some of these populations and a papertrail is always better IMO. You should look at the People of the British Isles study if you haven't already. It is very informative. I forgot to add the 2% Great Britain in my results. I'm going off memory as I can't access the info at the moment.