There was a Jewish minority in Abruzzo, which is actually where my Italian Jewish heritage comes from. Jews were more prominent in the coastal cities...
Your Amerindian seems quite high. Did you have any family story about having Native American ancestry? Apparently all Quebecois are believed to have...
My mtdna comes from the south coast of Ireland...well, before it came to America...and there are many J1c2b samples in Denmark according to the YFull...
I'd say the matches are definitely worth it, especially if you got a family tree there aswell. Unlike Ancestry for example, you get the actual shared...
Different set of matches, triangulation tools that are not on Ancestry. Bigger database than FamilyTreeDNA - 1 million vs 2.5 million for MyHeritage...