I have a copy of a 1921 Mensch genealogy with several generations of Mensch's including most of the known PA Menschs, starting with John Nicholas Mensch, b.1712, who sailed to America from Rotterdam on the ship ST.MARK. I also have an updated version that includes as many as we could locate (as of 1986) descendents of William and Anna C. Mensch. I would be happy to trade information.