_Christian I OLDENBURG __+
                                                   | (1110 - 1167)           
                             _Maurice I OLDENBURG _|
                            | (1145 - 1211)        |
                            |                      |_Kunigunde of VERSFLETH _
                            |                        (1125 - 1198)           
 _Christian II OLDENBURG ___|
| (1178 - 1233)             |
|                           |                       _________________________
|                           |                      |                         
|                           |_Salome of WICKRATH __|
|                             (1150 - 1215)        |
|                                                  |_________________________
|                                                                            
|
|--John I OLDENBURG 
|  (1204 - 1270)
|                                                   _________________________
|                                                  |                         
|                            ______________________|
|                           |                      |
|                           |                      |_________________________
|                           |                                                
|_Agnes of ALTENA-ISENBURG _|
  (1166 - 1217)             |
                            |                       _________________________
                            |                      |                         
                            |______________________|
                                                   |
                                                   |_________________________