Hedwig of Holstein or Helvig was Queen of Sweden as the consort of King Magnus III Barnlock. Her parents were Gerhard I, Count of Holstein-Itzehoe and Elisabeth of Mecklenburg. Wikipedia
Born: 1259, Itzehoe, Germany
Died: 1325 (age 66 years)
Spouse: Magnus III of Sweden (m. 1276–1290)
Grandchildren: Magnus Birgersson, Magnus Eriksson, Erik Eriksson, and more
Coronation: 29 June 1281
Tenure: 1276–1290