Sibylla Countess of Holland - Pedigree | FamilyCentral
 Abt 1286 - 7 Jun 1337
 Abt 1294/95 - 7 Mar 1342
 Abt 1252 - 6 Apr 1311
 12 Mar 1270/71 - 16 Dec 1325
 1273 - 31 Dec 1299