_Wichmann I BILLUNG _+
                                             | (.... - 0944)       
                       _Wichmann II BILLUNG _|
                      | (0820 - 0881)        |
                      |                      |_____________________
                      |                                            
 _Egbert BILLUNG _____|
| (0855 - 0932)       |
|                     |                       _____________________
|                     |                      |                     
|                     |______________________|
|                                            |
|                                            |_____________________
|                                                                  
|
|--Billung of BILLUNG 
|  (0880 - 0967)
|                                             _____________________
|                                            |                     
|                      ______________________|
|                     |                      |
|                     |                      |_____________________
|                     |                                            
|_____________________|
                      |
                      |                       _____________________
                      |                      |                     
                      |______________________|
                                             |
                                             |_____________________