_Casimir I PIAST _____________+
                                                    | (1280 - 1358)                
                       _Přemyslav I Nošák PIAST _|
                      | (1333 - 1410) m 1360        |
                      |                             |_Euphemia of PIAST ___________+
                      |                               (1312 - 1373)                
 _Bolesław I PIAST __|
| (1363 - 1431)       |
|                     |                              _Bolesław PIAST _____________+
|                     |                             | (1330 - 1355)                
|                     |_Elisabeth of PIAST _________|
|                       (1347 - 1374) m 1360        |
|                                                   |_Margareta of STERNBERG ______
|                                                                                  
|
|--Bolesław II PIAST 
|  (1425 - 1452)
|                                                    _Siemowit III PIAST __________+
|                                                   | (1320 - 1381)                
|                      _Siemowit IV PIAST __________|
|                     | (1353 - 1425)               |
|                     |                             |______________________________
|                     |                                                            
|_Euphemia of PIAST __|
                      |
                      |                              _Algirdas GEDIMINID __________+
                      |                             | (1296 - 1377)                
                      |_Alexandra of GEDIMINID _____|
                        (1360 - 1434)               |
                                                    |_Uliana Alexndrovna of RURIK _+
                                                      (1325 - 1390)