Birger Magnusson, Dux Sweorum, was born circa 1200 to Magnus Minniskiöld (c1175-c1209) and Ingrid Ylva (bef1195-) and died 21 October 1266 of unspecified causes. He married Ingeborg Eriksdotter of Sweden (c1212-c1254) 1235 JL . He married Mechthild of Holstein (c1220-1288) 1261 JL .
Children
| Name | Birth | Death | Joined with |
| Rikissa of Sweden (c1237-aft1288) | 1237 | 1288 | Haakon of Norway (1232-1257) Heinrich I. zu Werle (c1245-1291) |
| Valdemar of Sweden (1239-1302) | 1239 | 26 December 1302 | Sofia of Denmark (1241-1286) |
| Magnus III of Sweden (1240-1290) | 1240 | 8 December 1290 | Hedwig von Holstein (bef1264-c1325) |
| Katharina of Sweden (1245-aft1289) | 1245 | 28 February 1289 | Siegfried I. von Anhalt (c1230-1298) |
| Eric Birgersson (1250-) | |||
| Ingeborg of Sweden (c1254-1302) | 1254 | 30 June 1302 | Johann I. von Sachsen-Lauenburg (c1248-1286) |
| Benedict Birgersson | |||
| Name | Birth | Death | Joined with |
| Christine Birgersdotter | |||
| Name | Birth | Death | Joined with |
| Gregers Birgersson | |||
Footnotes (including sources)
| ‡ General |
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