Duke of Swabia Frederick II - Pedigree | FamilyCentral
 Abt 1090 - 6 Apr 1147
 Abt 1050 - 20 Jan 1105
 1072 - 24 Sep 1143
 11 Nov 1050 - 7 Aug 1106
 21 Sep 1051 - 27 Dec 1081