_Piast Kołodziej PIAST _+
                                            | (0740 - 0861)           
                       _Siemowit PIAST _____|
                      |                     |
                      |                     |_Rzepicha of UNKNOWN ____
                      |                                               
 _Lestek PIAST _______|
| (0870 - 0930)       |
|                     |                      _________________________
|                     |                     |                         
|                     |_____________________|
|                                           |
|                                           |_________________________
|                                                                     
|
|--Siemomysł PIAST 
|  (.... - 0950)
|                                            _________________________
|                                           |                         
|                      _____________________|
|                     |                     |
|                     |                     |_________________________
|                     |                                               
|_____________________|
                      |
                      |                      _________________________
                      |                     |                         
                      |_____________________|
                                            |
                                            |_________________________