I don't know who Mary Dunn is, but there were some Brewster sisters who m. into Dunns and the family eventually started three different colleges in Indiana.. Dunns in my branch came from Ireland before the rw and all fought before and during the war. My John served "on the Frontiers of said country" according to papers from Pa. There were a lot of Dunns in Northampton, and Philadelphia, and in New Jersey. You might check there. My husband was a McLendon whose family eventually settled in Texas. Haven't figured out how they got there, but am told they came from the south, then on to Texas, believe the Carolinas were mentioned. Roslyn.