Stefan married Princess of Sicily Isabella on 27 Jun 1328. Isabella (daughter of King of Sicily FEDRICO and Princess of Sicily-Naples Elbeonora) was born about 1309 in Palermo, Palermi, Sicily; died on 21 Mar 1349 in Prob., Landshut, Niederbayern, Bavaria. [Group Sheet] [Family Chart]

1. Duke of Bavaria-Ingolstadt Stefan, III was born about 1337 in Landshut, Niederbayern, Bavaria; died on 26 Sep 1413 in Niederschhonenfeld, Schwaben, Bavaria; was buried in Niederschhonenfeld, Schwaben, Bavaria.
2. Princess of Bavaria Agnes was born about 1338 in Landshut, Niederbayern, Bavaria.
3. Duke of Bavaria-Landshut Friedrich was born about 1339 in Landshut, Niederbayern, Bavaria; died on 4 Dec 1393 in Budejovice, Ceskbe, Czechoslovakia; was buried in Seligenthal, Landshut, Niederbayern, Bavaria.
4. Duke of Bavaria-Munich Johann, II was born about 1341 in Landshut, Niederbayern, Bavaria; died on 8 Aug 1397 in Mhunchen, Oberbayern, Bavaria.