_Hucbert BOSONID ___________+
                                               | (0820 - 0864)              
                       _Theobald BOSONID ______|
                      | (0854 - 0895)          |
                      |                        |____________________________
                      |                                                     
 _Boso BOSONID _______|
| (.... - 0940)       |
|                     |                         _Lothair II CAROLINGIAN ____+
|                     |                        | (0835 - 0869)              
|                     |_Bertha of CAROLINGIAN _|
|                       (0863 - 0924)          |
|                                              |_Waldrada of ETICHO ________
|                                                (0840 - 0869)              
|
|--Willa of BOSONID 
|  (0911 - 0970)
|                                               _Conrad II WELF ____________+
|                                              | (.... - 0876)              
|                      _Rudolf I WELF _________|
|                     | (0859 - 0912)          |
|                     |                        |_Waldrada of UDALRICHING ___+
|                     |                          (0801 - ....)              
|_Willa of WELF ______|
  (0900 - 0936)       |
                      |                         _Boso BIVINID ______________+
                      |                        |                            
                      |_Guilla of BIVINID _____|
                        (0873 - 0924)          |
                                               |_Ermengarde of CAROLINGIAN _+
                                                 (0852 - 0897)