_Henry I ASCANIA _____________________+
| (1170 - 1252)
_Siegfried I ASCANIA _____________|
| (1230 - 1298) m 1259 |
| |_Irmgard of LUDOVINGIAN ______________+
| (1197 - 1244)
_Albert I ASCANIA ___|
| (.... - 1316) m 1300|
| | _Birger Magnusson BJÄLBO ____________+
| | | (1200 - 1266)
| |_Catherine Birgersdotter BJÄLBO _|
| m 1259 |
| |_Ingeborg Eriksdotter of ERIC ________+
| (1212 - 1254)
|
|--Matilda of ASCANIA
| (.... - 1342)
| _John I ASCANIA ______________________+
| | (1213 - 1266)
| _Conrad ASCANIA __________________|
| | (1240 - 1304) |
| | |_Sophia of Valdemarsdatter ESTRIDSEN _+
| | (1217 - 1247)
|_Agnes of ASCANIA ___|
(.... - 1330) m 1300|
| _Przemysł I PIAST ___________________+
| | (1190 - 1257)
|_Constance of PIAST ______________|
(1245 - 1281) |
|_Elisabeth of PIAST __________________+
(1232 - 1264)