_Casimir II PIAST ___________________+
                                                      | (1138 - 1194)                       
                       _Konrad I PIAST _______________|
                      | (1188 - 1247)                 |
                      |                               |_Helen of PŘEMYSLID ________________+
                      |                                 (1141 - 1202)                       
 _Casimir I PIAST ____|
| (1211 - 1267)       |
|                     |                                _Svyatoslav III Igorevich OLGOVICHI _
|                     |                               | (1176 - 1211)                       
|                     |_Agafia Svyatoslavna of RURIK _|
|                                                     |
|                                                     |_Yaroslava Rurikovna RURIK __________+
|                                                                                           
|
|--Ziemomysl PIAST 
|  (1245 - 1287)
|                                                      _Henry I PIAST ______________________+
|                                                     | (1165 - 1237)                       
|                      _Henry II PIAST _______________|
|                     | (1196 - 1241)                 |
|                     |                               |_Hedwig of ANDECHS __________________+
|                     |                                 (1174 - 1243)                       
|_Constance of PIAST _|
  (1221 - 1256)       |
                      |                                _Ottokar I PŘEMYSLID _______________+
                      |                               | (1155 - 1230)                       
                      |_Anne of PŘEMYSLID ___________|
                        (1203 - 1265)                 |
                                                      |_Constance of ÁRPÁD _______________+
                                                        (1180 - 1240)