- b.~ 1070 in , , , Oldenburg d.1143
- b.~ 1102 in , , , Oldenburg d.1167
- b.~ 1076 in Paderborn
- b.~ 1132
- b.~ 1091 in Wassenburg d.1134 in Zutphen, Guelders, Netherlands
- b.~ 1106 in Zutphen, , , Geldern
- b.~ 1034 d.1134
- b.~ 1176 in Wildeshausen, , , Oldenburg d.06 Jul 1233
- b.~ 1090 in Loccum d.1130
- b.~ 1118 in Loccum d.< 1167
- b.~ 1140 in Loccum
- b.~ 1080 d.1150
- b.~ 1120 in Rheineck
- b.~ 1089 d.> 1154
- b.~ 1202 in Wildehausen, , , Oldenburg d.<20 Aug 1270
- b.~ 1154
- b.~ 1180 in Schoten, , , Netherlands
- b.~ 1233 in Wildeshausen, , , Oldenburg d.1287
- b.~ 1182
- b.~ 1186