Fredrick, Count Palatine of Simmern Clergyman of the house of Palatinate-Simmern (1460-1518) (1460–1518) 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) Rupert, Count Palatine of Simmern Stefan van Palts-Simmern Willem van Palts-Simmern