Susan Yes, I believe that these Younkins are a branch of the same family.  In regard to a migration pattern: John Michael Younkin (1756-1826) s/o Johann Henrick Junghen (1717-1787) is the only one in my data on this line who is shown to have left Pennsylvania.  He married Catherina (prob Loudoun Co.,Va). I have seven children listed for John and Catherina. All were born in Va and dc'd in Pa. If my information is correct, all members of this family eventually returned to Somerset Co,Pa Jacob Younkin married Eleanor in Loudoun Co Va. I have only three children listed for this couple : William Younkin w married Catherine Firestone, John Michael w married Laura Flora Minerd and Catherine w married George Firestone (these were the only children named in estate settlement of Jacob) from research of  Olive Duff, Dawson, Pa I believe the Firestones were residents of Loudoun @ time of marriages, but have no proof of this.. Please let me know if you want further info re: Younkin family. I may find more re: migration as I progress. Virginia Tempe, AZ