_Mieszko IV PIAST ______+
                                            | (1130 - 1211)          
                       _Casimir I PIAST ____|
                      | (1179 - 1230)       |
                      |                     |_Ludmila of UNKNOWN ____
                      |                                              
 _Władysław PIAST __|
| (1225 - 1282)       |
|                     |                      ________________________
|                     |                     |                        
|                     |_Viola of UNKNOWN ___|
|                                           |
|                                           |________________________
|                                                                    
|
|--Mieszko I PIAST 
|  (1252 - 1315)
|                                            _Odon PIAST ____________+
|                                           | (1149 - 1194)          
|                      _Władysław PIAST __|
|                     | (1190 - 1239)       |
|                     |                     |_Viacheslava of HALYCH _+
|                     |                                              
|_Euphemia of PIAST __|
  (1230 - 1280)       |
                      |                      ________________________
                      |                     |                        
                      |_Hedwig of UNKNOWN __|
                        (.... - 1249)       |
                                            |________________________