_Siemowit I PIAST ________________+
                                                             | (1224 - 1262)                    
                            _Boleslaw II PIAST ______________|
                           | (1253 - 1313)                   |
                           |                                 |_Pereyaslava Daniilovna of RURIK _+
                           |                                   (.... - 1283)                    
 _Trojden I PIAST _________|
| (1284 - 1340)            |
|                          |                                  _Traidenis MINDAUGAS _____________
|                          |                                 | (.... - 1282)                    
|                          |_Gaudemunda Sophia of MINDAUGAS _|
|                            (1260 - 1288)                   |
|                                                            |__________________________________
|                                                                                               
|
|--Casimir I PIAST 
|  (1329 - 1355)
|                                                             _Leo I Daniilovich RURIK _________+
|                                                            | (1228 - 1301)                    
|                           _Yuri I Levanovich RURIK ________|
|                          | (1252 - 1307)                   |
|                          |                                 |_Constance of ÁRPÁD ____________+
|                          |                                   (1237 - 1302)                    
|_Maria Yurievna of RURIK _|
  (1293 - 1340)            |
                           |                                  _Casimir I PIAST _________________+
                           |                                 | (1211 - 1267)                    
                           |_Euphemia of PIAST ______________|
                             (1265 - 1307)                   |
                                                             |_Euphrosyne of PIAST _____________+
                                                               (1228 - 1292)