Gertruda, Princess of Silesia - Pedigree | FamilyCentral
 Abt 1168 - 19 Mar 1238
 Abt 1167 - 15 Oct 1243
 Aft 1129 - 7/ 8 Dec 1201
 Bef 11 Jan 1126 -
 1105 - 30 May 1159
 Abt 1111 - Aft 25 Jan 1157
 20 Aug 1085 - 28 Oct 1138
 Abt 1084 - 15 Nov 1136