Rupert, Count Palatine of Simmern Bishop of Regensburg (1461–1507) Parents Margaret of Guelders Frederick I, Count Palatine of Simmern Children Siblings John I, Count Palatine of Simmern Catherine, Countess Palatine of Simmern (1455-1522) Fredrick, Count Palatine of Simmern Stefan van Palts-Simmern Willem van Palts-Simmern