Adelheid, Countess of Ravensberg - Pedigree | FamilyCentral
 Abt 1270 - Bef 15 Dec 1339
 Abt 1238 - 5 Mar 1315
 Abt 1194 - Aft 23 Mar 1265
 Abt 1210 - Aft 19 Jan 1245