_Christian III OLDENBURG _+ | (1245 - 1285) _John II OLDENBURG __| | (1260 - 1314) | | |_Hedwig of WILDESHAUSEN __+ | (1233 - 1314) _Conrad I OLDENBURG ______| | (1300 - 1367) | | | __________________________ | | | | |_Hedwig of DIEPHOLZ _| | (1264 - 1307) | | |__________________________ | | |--Gerard OLDENBURG | (1332 - 1368) | __________________________ | | | _____________________| | | | | | |__________________________ | | |_Ingeborg of SCHAUENBURG _| (1316 - 1350) | | __________________________ | | |_____________________| | |__________________________