________________________
                                                 |                        
                       _Bivin BIVINID ___________|
                      | (0810 - 0863)            |
                      |                          |________________________
                      |                                                   
 _Richard BIVINID ____|
| (0858 - 0921) m 0888|
|                     |                           _Boso BOSONID __________
|                     |                          | (0800 - 0855)          
|                     |_Richildis of BOSONID ____|
|                       (.... - 0883)            |
|                                                |_Engeltrude of UNKNOWN _
|                                                                         
|
|--Boso BIVINID 
|  (0895 - 0935)
|                                                 _Conrad I WELF _________+
|                                                | (0800 - 0864)          
|                      _Conrad II WELF __________|
|                     | (.... - 0876)            |
|                     |                          |_Adelaide of ETICHO ____+
|                     |                            (0820 - 0866)          
|_Adelaide of WELF ___|
  (0865 - ....) m 0888|
                      |                           _Adrian UDALRICHING ____+
                      |                          | (0755 - 0821)          
                      |_Waldrada of UDALRICHING _|
                        (0801 - ....)            |
                                                 |_Waldrada of WILHELMID _+