__
                          |  
                        __|
                       |  |
                       |  |__
                       |     
 _Egilmar I OLDENBURG _|
| (1050 - 1112)        |
|                      |   __
|                      |  |  
|                      |__|
|                         |
|                         |__
|                            
|
|--Johann OLDENBURG 
|  (1064 - ....)
|                          __
|                         |  
|                       __|
|                      |  |
|                      |  |__
|                      |     
|_Richenza VON STADE __|
  (1044 - 1106)        |
                       |   __
                       |  |  
                       |__|
                          |
                          |__