_Christian I OLDENBURG __+
                                                    | (1110 - 1167)           
                              _Maurice I OLDENBURG _|
                             | (1145 - 1211)        |
                             |                      |_Kunigunde of VERSFLETH _
                             |                        (1125 - 1198)           
 _Otto I OLDENBURG __________|
| (1175 - 1251)              |
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|                            |                      |                         
|                            |_Salome of WICKRATH __|
|                              (1150 - 1215)        |
|                                                   |_________________________
|                                                                             
|
|--Heinrich OLDENBURG 
|  (1213 - 1256)
|                                                    _________________________
|                                                   |                         
|                             ______________________|
|                            |                      |
|                            |                      |_________________________
|                            |                                                
|_Mechthild VON WOHLDENBERG _|
  (1164 - ....)              |
                             |                       _________________________
                             |                      |                         
                             |______________________|
                                                    |
                                                    |_________________________