_Maurice I OLDENBURG ____+
                                                             | (1145 - 1211)           
                                  _Christian II OLDENBURG ___|
                                 | (1178 - 1233)             |
                                 |                           |_Salome of AHR-WICKRATH _
                                 |                             (1150 - 1215)           
 _John I OLDENBURG ______________|
| (1204 - 1270)                  |
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|                                |_Agnes of ALTENA-ISENBURG _|
|                                  (1166 - 1217)             |
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|
|--Otto II OLDENBURG 
|  (1253 - 1303)
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|_Richeza of HOYA-STUMPENHAUSEN _|
  (1220 - 1270)                  |
                                 |                            _________________________
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                                 |___________________________|
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