_Konrad I PIAST _______________+
                                              | (1188 - 1247)                 
                        _Casimir I PIAST _____|
                       | (1211 - 1267)        |
                       |                      |_Agafia Svyatoslavna of RURIK _+
                       |                                                      
 _Władysław I PIAST _|
| (1261 - 1332)        |
|                      |                       _Casimir I PIAST ______________+
|                      |                      | (1179 - 1230)                 
|                      |_Euphrosyne of PIAST _|
|                        (1228 - 1292)        |
|                                             |_Viola of UNKNOWN _____________
|                                                                             
|
|--Elizabeth of PIAST 
|  (1305 - 1380)
|                                              _Władysław PIAST ____________+
|                                             | (1190 - 1239)                 
|                       _Bolesław PIAST _____|
|                      | (1224 - 1279)        |
|                      |                      |_Hedwig of UNKNOWN ____________
|                      |                        (.... - 1249)                 
|_Jadwiga of PIAST ____|
  (1266 - 1339)        |
                       |                       _Bela IV ÁRPÁD ______________+
                       |                      | (1206 - 1270)                 
                       |_Yolanda of ÁRPÁD __|
                         (1235 - 1298)        |
                                              |_Maria LASKARIS _______________+
                                                (1206 - 1270)