_Bolesław II PIAST __+
                                             | (1220 - 1278)        
                       _Bolko I PIAST _______|
                      | (1252 - 1301)        |
                      |                      |_Hedwig of ASCANIA ___+
                      |                        (.... - 1259)        
 _Bernard PIAST ______|
| (1291 - 1326)       |
|                     |                       _Otto V ASCANIA ______+
|                     |                      | (1246 - 1298)        
|                     |_Beatrice of ASCANIA _|
|                       (1270 - 1316)        |
|                                            |_Jutta of HENNEBERG __+
|                                              (.... - 1295)        
|
|--Elisabeth of PIAST 
|  
|                                             _Casimir I PIAST _____+
|                                            | (1211 - 1267)        
|                      _Władysław I PIAST _|
|                     | (1261 - 1332)        |
|                     |                      |_Euphrosyne of PIAST _+
|                     |                        (1228 - 1292)        
|_Kunigunde of PIAST _|
  (1298 - 1331)       |
                      |                       _Bolesław PIAST _____+
                      |                      | (1224 - 1279)        
                      |_Jadwiga of PIAST ____|
                        (1266 - 1339)        |
                                             |_Yolanda of ÁRPÁD __+
                                               (1235 - 1298)