_Bernard III ASCANIA ________+
                                                                   | (1134 - 1211) m 1173        
                                    _Henry I ASCANIA ______________|
                                   | (1170 - 1252)                 |
                                   |                               |_Judith of PIAST ____________+
                                   |                                 (1154 - 1201) m 1173        
 _Siegfried I ASCANIA _____________|
| (1230 - 1298) m 1259             |
|                                  |                                _Hermann I LUDOVING _________+
|                                  |                               | (1165 - 1217)               
|                                  |_Irmgard of LUDOVING __________|
|                                    (1197 - 1244)                 |
|                                                                  |_Sophia of WITTELSBACH ______+
|                                                                    (1170 - 1238)               
|
|--Konstanze of ASCANIA 
|  (.... - 1316)
|                                                                   _Magnus Minnesköld BJÄLBO _+
|                                                                  | (1175 - 1208)               
|                                   _Birger Magnusson BJÄLBO _____|
|                                  | (1200 - 1266)                 |
|                                  |                               |_____________________________
|                                  |                                                             
|_Catherine Birgersdotter BJÄLBO _|
   m 1259                          |
                                   |                                _Eric X Knutsson ERIC _______+
                                   |                               |                             
                                   |_Ingeborg Eriksdotter of ERIC _|
                                     (1212 - 1254)                 |
                                                                   |_Richeza of ESTRIDSEN _______+
                                                                     (1190 - 1220)