I am descended from Jacob Oberholtzer and his wife Catharine through their son Michael A. Oberholtzer.I do not have much info except: Jacob Oberholtzer (parents were John Oberholtzer and Ursula_____), b. 9/5/1767, d. 10/16/1836, abt. age 71, in Chester Co., PA.He's buried in St. Vincent's Cemetery there.Apparently there was a move from Hatfield, Montg. Co., PA to Chester Co., PA (all children of Jacob and Catharine were born in Montg. Co., PA).Catharine Allabaugh/Allebach, b. ca. 1763, d. 12/20/1842, buried in Skippack Church Cemetery.