_Casimir II PIAST ___________________+ | (1138 - 1194) _Konrad I PIAST _______________| | (1188 - 1247) | | |_Helen of PŘEMYSLID ________________+ | (1141 - 1202) _Siemowit I PIAST _____| | (1224 - 1262) | | | _Svyatoslav III Igorevich OLGOVICHI _ | | | (1176 - 1211) | |_Agafia Svyatoslavna of RURIK _| | | | |_Yaroslava Rurikovna RURIK __________+ | | |--Konrad II PIAST | (1250 - 1294) | _____________________________________ | | | _______________________________| | | | | | |_____________________________________ | | |_Pereyaslava of RURIK _| (.... - 1283) | | _____________________________________ | | |_______________________________| | |_____________________________________