_Egbert BILLUNG _____+
                                              | (0855 - 0932)       
                       _Billung of BILLUNG ___|
                      | (0880 - 0967)         |
                      |                       |_____________________
                      |                                             
 _Hermann BILLUNG ____|
| (0900 - 0973)       |
|                     |                        _____________________
|                     |                       |                     
|                     |_Ermangarde of NANTES _|
|                                             |
|                                             |_____________________
|                                                                   
|
|--Bernard I BILLUNG 
|  (0950 - 1010)
|                                              _____________________
|                                             |                     
|                      _______________________|
|                     |                       |
|                     |                       |_____________________
|                     |                                             
|_Oda of SAXONY ______|
  (.... - 0972)       |
                      |                        _____________________
                      |                       |                     
                      |_______________________|
                                              |
                                              |_____________________