Friedrich, Count of Zollern - Pedigree | FamilyCentral
 Abt 1339 - Aft 10 May 1383
 Abt 1306 - Aft 20 Dec 1378
 Abt 1310 - Aft 9/ 5 Dec/Feb 4713 BC
 Abt 1283 - Bef 26 Apr 1319
 Abt 1286 - Aft 15 Jan 1325