________________________
                                                     |                        
                              _Bivin BIVINID ________|
                             | (0810 - 0863)         |
                             |                       |________________________
                             |                                                
 _Boso BIVINID ______________|
|                            |
|                            |                        _Boso BOSONID __________
|                            |                       | (0800 - 0855)          
|                            |_Richildis of BOSONID _|
|                              (.... - 0883)         |
|                                                    |_Engeltrude of UNKNOWN _
|                                                                             
|
|--Guilla of BIVINID 
|  (0873 - 0924)
|                                                     _Lothair I CAROLINGIAN _+
|                                                    | (0795 - 0855) m 0821   
|                             _Louis II CAROLINGIAN _|
|                            | (0825 - 0875)         |
|                            |                       |_Ermengarde of ETICHO __+
|                            |                         (.... - 0850) m 0821   
|_Ermengarde of CAROLINGIAN _|
  (0852 - 0897)              |
                             |                        ________________________
                             |                       |                        
                             |_______________________|
                                                     |
                                                     |________________________