A primary reason to establish this project is to compare those with the SNP R-BY-575.  Thus far it seems to be the most commonly found in the families with the Surnames of Forsythe and Morgan. This will hopefully change as more and more testers take a YDNA test.

The graphic below comes from Mike Walsh and to whom we are grateful.

To the right-hand side of the graphic, you will locate the R-BY575 SNP and its relationship to R-DF13 and R-L21.

R1b-L21_Tree_Descendant