I have a John Schumacker, son of Jacob Schumacker and Catherina Scheetz. Catherine, and presumably Jacob, came from Pirmasens, Germany (between Worms and France) to Philadelphia, Pennsylvania. Jacob's brother, Thomas Schumacker, also immigrated. We have no further information on Thomas.
John's sister, Elizabeth, was born in Philadelphia in 1757. John and Elizabeth had a sister named Rosina Catherine (b.1852).