Has anyone looked into Chromosome Mapping and matching Ancestral Surnames? I am a descendant of William Brewster and when I did my Chromosome Mapping for matches I found matches for Wentworth but none for Wyrall. This doesn't mean it is the Wentworth Surname of Mary Brewster. It also doesn't eliminate the Wyrall connection. It only means that no one with that surname has been tested that matches my DNA.
I am interested in finding out how to look more into this avenue of exploration. Please let me know what are your thoughts, objections and ideas. Thanks, Mary Halvorson