Has anyone checked with the the Polk Pollock etc surname group on Ftdna and facebook? John has written some books/papers and Bill does a lot of research. They are doing a YDNA study and John has several lines identified by YDna pretty sure the Robert Bruce Polk Pollock line is pretty certain back to about 1200 (by YDNA). I am trying to find a male Polk cousin who has YDna tested to help verify my ancestry beyond Robert Bruce Polk.