Conrad, the son of Markus(Mark), had a son named Jorg (George) born 1802 Manheim, Schuylkill county, PA. George probably died in Luzerne County. The name is sometimes spelled SWANK.I don't know the family's religion.
Conrad's wife went by Catherina (Catherine), but her full name was Maria Catherina DeWald, daughter of Johannes (John) DEWALD (Dewalt / Dewaldt).
Does anyone know if there's a connection to the SCHWENKFELDERS, a German religious group that was the forerunners of Quakers, was founded by Casper Schwenckfeld von Ossig, a contemporary of Martin Luther. See www.centralschwenkfelder.com. The name sure is close to Schwenk and I would think there's a possible connection.