Who married Margareta Hasbjörnsdatter?

Margareta Hasbjörnsdatter or Margareta Asbjørnsdatter (11th century) was Queen consort of Denmark as the wife of King Harald III.

Margareta was the daughter of jarl Asbjörn Ulfsen, possibly an uncle of her spouse; she would thereby have been her husband's cousin. No children are known from the marriage. The dates of her birth and death are unknown.

A DNA test in 2003 dispelled the centuries-old legend that Estrid Svendsdatter was buried in the northeastern pier of the Roskilde Cathedral. The new theory is that the sign on the pier refers to Margareta Hasbjörnsdatter, who was also known as Estrid.

Harald Hen (Runic Danish for "Harald the Whetstone"; c. 1040 – 17 April 1080) was King of Denmark from 1076 to 1080. Harald III was an illegitimate son of Danish king Sweyn II Estridsson, and contested the crown with some of his brothers. He was a peaceful ruler who initiated a number of reforms. Harald was married to his cousin Margareta Hasbjörnsdatter, but did not leave any heirs, and was succeeded by his brother Canute IV the Saint. Four of his half-brothers were in turn crowned Danish kings.