Hi all. I belong to an r1a1 group on ancestry. The admin of the group breaks up everyone into regions. For example:Norman, Brit Isles, Ashkenazi etc. I was told it is based on ones dys values and last name. Is this possible? When I recieved my info from FTDNA it put me all over the map. I have asked others and was told certain dys values are common in certain areas.

Is there some type of guideline?

Is there a way to find out if some of my dys values are common in a specifc area?

This is my second post and I appreciate all the help on the last one.

Thanks and happy new year!