_____________________
                                                  |                     
                          _Otto I WITTELSBACH ____|
                         | (1020 - 1072)          |
                         |                        |_____________________
                         |                                              
 _Eckhard I WITTELSBACH _|
| (.... - 1091)          |
|                        |                         _____________________
|                        |                        |                     
|                        |_FNU of REICHERSBEUERN _|
|                                                 |
|                                                 |_____________________
|                                                                       
|
|--Otto IV WITTELSBACH 
|  (1083 - 1156)
|                                                  _Poppo I WEIMAR _____+
|                                                 | (.... - 1044)       
|                         _Ulric I of WEIMAR _____|
|                        | (.... - 1069)          |
|                        |                        |_Hadamut of UNKNOWN _
|                        |                                              
|_Richardis of WEIMAR ___|
                         |
                         |                         _Béla I ÁRPÁD ____+
                         |                        | (1015 - 1063) m 1033
                         |_Sophia of ÁRPÁD _____|
                           (1050 - 1095)          |
                                                  |_Richeza of PIAST ___+
                                                    (1013 - 1075) m 1033