Ingeborg Birgersdotter

Ingeborg Birgersdotter (c. 1253 – 30 June 1302), was a Duchess consort of Saxony, married to John I, Duke of Saxony. She was the daughter of the Swedish regent Birger Jarl and Princess Ingeborg Eriksdotter of Sweden.

Ingeborg Birgersdotter has been falsely identified as the daughter of her maternal uncle King Eric XI of Sweden, likely because she in contemporary German sources was referred to as filiam regis Suecie and filia Regis Sweonum (Daughter of the Swedish King).

Marriage and issue
Ingeborg married John I, Duke of Saxony, in 1270. She had eight children, among them the following:
 * Helen (*c. 1272–1337*), married with (1) Günther IX, Count of Schwarzburg-Blankenburg (*died 1289*), (2) in c. 1297 Adolph VI, Count of Holstein-Schauenburg
 * Elisabeth (*c. 1274– before 1306*), married in 1287 with Valdemar IV, Duke of Schleswig.
 * John II (*c. 1275–22 April 1321*)
 * Eric I (*1280/1282–1359/1361*)
 * Albert III (*c. 1281–October 1308*)
 * Sophia (*died 13 December 1319*), prioress in Plötzkau