_Henry II PIAST _____+
                                                     | (1196 - 1241)       
                       _Konrad I PIAST ______________|
                      | (1228 - 1273)                |
                      |                              |_Anne of PŘEMYSLID _+
                      |                                (1203 - 1265)       
 _Henry III PIAST ____|
| (1251 - 1309)       |
|                     |                               _Władysław PIAST __+
|                     |                              | (1190 - 1239)       
|                     |_Salome Odonicówna of PIAST _|
|                       (1225 - 1267)                |
|                                                    |_Hedwig of UNKNOWN __
|                                                      (.... - 1249)       
|
|--Henry IV PIAST 
|  (1292 - 1341)
|                                                     _Otto I WELF ________+
|                                                    | (1204 - 1252) m 1228
|                      _Albert I WELF _______________|
|                     | (1236 - 1279)                |
|                     |                              |_Matilda of ASCANIA _+
|                     |                                (1210 - 1261) m 1228
|_Matilda of WELF ____|
  (1276 - 1318)       |
                      |                               _____________________
                      |                              |                     
                      |_Adelheid of ALERAMICI _______|
                        (1242 - 1285)                |
                                                     |_____________________