Your "recent ancestor locations" at 23andMe, are they accurate?

[Tolan]

For me, this is the most accurate analysis I know of all that I have been able to do as analysis with professional or amateur tools!
But maybe this is not right for everyone!

What is your opinion based on your results?

My recent ancestor location are:
France: Highly Likely Match
Stronger: Brittany

Reality: 90% Brittany, 9.8% Pays de Loire, 0.3% Normandy

My dad's recent ancestor location:
France: Highly Likely Match
Stronger: Brittany
Medium: Pays de Loire
Weaker: Normandy , Île de France

Reality: 95.4% Brittany, 4.3% Pays de Loire, 0.3% Normandy

[FionnSneachta]

The recent ancestors feature isn't particularly accurate for me. My known ancestors were ≅ 81.25% Roscommon, 12.5% Galway and 6.25% Mayo.

23andMe has me as:
Ireland (Highly Likely Match)
1. County Mayo (should 3rd highest)
2. County Galway (expected to be 2nd highest)
3. County Cork
4. County Dublin
5. County Donegal
6. County Roscommon (should be 1st)
7. County Sligo
8. County Kerry
9. County Leitrim
10. County Tipperary

I'm not too concerned with the order of Roscommon, Galway and Mayo since my ancestors are from an area that is near to the border of both Mayo and Galway. However, Roscommon should be in the top 3.

United Kingdom (Highly Likely Match)
1. Greater london
2. Glasgow City
3. Greater Manchester
4. Merseyside
5. West Midlands
6. West Yorkshire
7. Belfast
8. South Yorkshire
9. County Durham
10. Edinburgh

I have no known ancestors in the United Kingdom. I find Ancestry's genetic communities to be more accurate for me.

[The_Lyonnist]

Où trouve-t-on cet outil ?

[Stefanie]

Où trouve-t-on cet outil ?

C'est une caractéristique de la composition des ancêtres de 23andme

I had to use the translator. Hope that’s right.

For me this doesn’t really work. None of my ancestors were in Europe 200 years ago. They have all been in North America for hundreds of years. But it worked specifically well for my son. He has Italian on his father’s side. And the areas match up with his 2nd great grandfather and 3rd great grandmother. I thought they did a good job on his RAL’s.

Italian 3.8%
Italy Highly Likely Match

Italy has 20 administrative regions, and we found the strongest evidence of your ancestry in the following 2 regions.

1. Tuscany
2. Sicily

Felice Iacopetti
1865–1948
BIRTH 22 AUG 1865 • Castelvecchio, Capannori, Lucca, Toscana, Italy
DEATH 29 NOV 1948 • Bakersfield, Kern, California, United States

Flavia Rossi Denoice
BIRTH Scicli, Ragusa, Sicilia, Italy
DEATH Unknown

[23abc]

My known ancestry: Greek from Southern Aegean (Kalymnos).

23andme gets Southern Aegean absolutely right, but the Italian is very strange. I actually get more evidence from a northern Italian region than I do to any other Greek region (except Southern Aegean of course)! In fact the confidence that I'm Calabrian is the same as being a Southern Aegean . I sometimes wonder if Kalymnian's actually do have Italian ancestry, but do not know about it...

Table with regions with evidence sorted from highest to lowest.

Region	Strength of Evidence
Southern Aegean	5.0
Calabria	5.0
Sicily	3.8
Campania	1.8
Emilia-Romagna	1.5
Peloponnese	0.8
Northern Aegean	0.7
Crete Region	0.6
Central Greece	0.4
Decentralized Administration of Attica	0.2
Ionian Islands	0.2
Thessalia	0.1

I also get Turkey (western provinces) as Likely for Anatolia section and Turkey (eastern provinces) as Likely for Iranian, Caucasian & Mesopotamian section, but no specific areas for either.

[Tolan]

Où trouve-t-on cet outil ?

Unfortunately, not everyone has them.
You must have several referenced segments of a region and you may not have any (for the moment).

[Tolan]

My known ancestry: Greek from Southern Aegean (Kalymnos).



Table with regions with evidence sorted from highest to lowest.

Region	Strength of Evidence
Southern Aegean	5.0
Calabria	5.0
Sicily	3.8
Campania	1.8
Emilia-Romagna	1.5
Peloponnese	0.8
Northern Aegean	0.7
Crete Region	0.6
Central Greece	0.4
Decentralized Administration of Attica	0.2
Ionian Islands	0.2
Thessalia	0.1

I also get Turkey (western provinces) as Likely for Anatolia section and Turkey (eastern provinces) as Likely for Iranian, Caucasian & Mesopotamian section, but no specific areas for either.

Where did you find the table of Strength of Evidence?

[Ibericus]

It just means that you match with several people who have ancestry in there. Some people get Sicily because many Americans have a branch of their family that originates from that region (although you may be related to them through a different branch)

[23abc]

Where did you find the table of Strength of Evidence?

Inspecting the HTML page. But now that I think about it, the values might be ratios instead of exact values, so maybe it's not fair to compare the Greek & Balkan ones to Italian ones.

[Stephen1986]

For myself -

United Kingdom (Highly Likely Match)

Greater Manchester - accurate, i have ancestors from Manchester and Oldham on my dad's side.
Lancashire - accurate, I'm from Lancashire (and some of these counties were originally part of Lancashire) and much of my ancestry on both sides is from the county.
Greater London - whilst one of my great grandfathers was born in London, his dad's family were recently from Hertfordshire and his mother's family from Lancashire.
Merseyside - accurate, I have ancestors from various towns in Merseyside on my dad's side.
West Yorkshire - I don't have any known ancestry from the county but I have ancestors who lived very close the border of it.
Tyne and Wear - no known ancestry but some of my ancestors on my dad's side seemed to have familial connections to the area.
West Midlands - no known ancestry from the county.
South Yorkshire - no known ancestry from the county.
Glasgow City - no known ancestry but there is a possible familial link.
Cumbria - ancestry from both the former Westmorland and the former Cumberland on both sides.

Ireland (Possible Match)

County Dublin - ancestry on both sides.
County Cork - ancestry on my dad's side.
County Clare - no known ancestry.
County Tipperary - no known ancestry.
County Kerry - no known ancestry.
County Donegal - an ancestor on my mum's side was born in the county to an English father but I don't know who his mother was.
County Galway - no known ancestry.
County Mayo - no known ancestry.
County Leitrim - no known ancestry.


For my brother -

United Kingdom (Highly Likely Match)

Lancashire
Greater Manchester
Greater London
Merseyside
West Yorkshire
West Midlands
South Yorkshire
Cumbria
Glasgow City
Hull - no known ancestry but some relatives on our mum's side moved there in the 19th century.

Ireland (Likely Match)

County Dublin
County Cork
County Donegal
County Galway
County Kerry
County Tipperary
County Mayo
County Clare
County Limerick - no known ancestry
County Longford - no known ancestry


Our known ancestry comes from (in no particular order) -

England - Lancashire, Greater Manchester, Merseyside, Cheshire, Cumbria, North Yorkshire, Shropshire, Hertfordshire, Bedfordshire, Suffolk, Gloucestershire.
Ireland - Counties Dublin, Cork, Armagh, Cavan, Meath, Roscommon, Donegal, Louth.
Wales - Gwynedd