Most males who are members of the Pettigrew Petticrew Y-DNA project apparently descend from a "Most Recent Common Ancestor," a man named Pettigrew who lived in Glasgow, Scotland about 1500. Some male-line descendants migrated first to England and Ireland and later dispersed throughout North America, Australia, and other locations. Over time the various branches moved again and again, sometimes to overlapping geographic regions. For many decades descendants have speculated about their own ancestral lines, but censuses, wills, pension applications, family Bibles and letters, land records, and other tools of traditional genealogy proved insufficient to differentiate clearly among these branches. Now through the use of genetic genealogy, we can try to obtain independent corroboration of traditional genealogical research. DNA tests and the results you share may even entice some of your relatives to participate in genealogy.