Stefan van Palts-Simmern 25 Feb 1457 - est. Nov 1489 Parents Frederick I, Count Palatine of Simmern Margaret of Guelders Children Siblings John I, Count Palatine of Simmern Fredrick, Count Palatine of Simmern Willem van Palts-Simmern Rupert, Count Palatine of Simmern Catherine, Countess Palatine of Simmern (1455-1522)