Asbjörn was the son of Ulf Thorgilsson and Estrid Margarete Svendsdotter. The date and place of his birth have not been found.
Ulf Thorgilsson |
Torkel Styrbjörnsson |
Styrbjörn Olofsson |
||||||
| ||||||||
| ||||||||
Estrid Margarete Svendsdotter |
Svend I Otto Haraldsson |
Harald Gormsson |
+ | |||||
| ||||||||
Świętosława |
Mieszko I |
|||||||
Dubrawka de Bohême |
+ |