_Mieszko III PIAST _______+
                                               | (1126 - 1201)            
                       _Odon PIAST ____________|
                      | (1149 - 1194)          |
                      |                        |_Elizabeth of ÁRPÁD ____+
                      |                                                   
 _Władysław PIAST __|
| (1190 - 1239)       |
|                     |                         _Yaroslav OSMOMYSL _______+
|                     |                        | (1135 - 1187)            
|                     |_Viacheslava of HALYCH _|
|                                              |
|                                              |_Olga Yurievna of SUZDAL _
|                                                (.... - 1189)            
|
|--Bolesław PIAST 
|  (1224 - 1279)
|                                               __________________________
|                                              |                          
|                      ________________________|
|                     |                        |
|                     |                        |__________________________
|                     |                                                   
|_Hedwig of UNKNOWN __|
  (.... - 1249)       |
                      |                         __________________________
                      |                        |                          
                      |________________________|
                                               |
                                               |__________________________