_Henry I ASCANIA ______________+
                                            | (1170 - 1252)                 
                       _Henry II ASCANIA ___|
                      | (1215 - 1266)       |
                      |                     |_Irmgard of LUDOVINGIAN _______+
                      |                       (1197 - 1244)                 
 _Otto I ASCANIA _____|
| (.... - 1304) m 1283|
|                     |                      _Otto I WELF __________________+
|                     |                     | (1204 - 1252) m 1228          
|                     |_Matilda of WELF ____|
|                       (.... - 1295)       |
|                                           |_Matilda of ASCANIA ___________+
|                                             (1210 - 1261) m 1228          
|
|--Otto II ASCANIA 
|  (.... - 1315)
|                                            _Henry II PIAST _______________+
|                                           | (1196 - 1241)                 
|                      _Henry III PIAST ____|
|                     | (1227 - 1266)       |
|                     |                     |_Anne of PŘEMYSLID ___________+
|                     |                       (1203 - 1265)                 
|_Hedwig of PIAST ____|
  (1256 - 1300) m 1283|
                      |                      _Konrad I PIAST _______________+
                      |                     | (1188 - 1247)                 
                      |_Judith of PIAST ____|
                        (1222 - 1257)       |
                                            |_Agafia Svyatoslavna of RURIK _+