I am a descendant of Jacob Obb(Opp, Upp) through his daughter Anna Marcretha who married Georg Christoph Knortzer. Their children who were listed in Jacob Upp's will as well as the will of Johann Balthasar Knortzer, Georg Christoph's father, were Johannes Nicolaus, Andreas, Johann Balthasar (John Balsar), Anna Marcretha, and Maria Catherina (In Jacob's will as - Nicholas Andreas Balsar Anna Margreta Catherina). The births of four of these children are recorded in church records in York Co., PA from 1746 to 1754; John Balser, my ancestor, is not there. Peter Upp married Maria Catherina Knortzer, sister to Georg Christoph. She was born in Treschklingen, Baden, Germany, 9 Feb 1724/25 and died in York Co., PA 12 Feb 1770. Her death record shows she and Peter had 13 children and 12 were surviving at her death.