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Estrid was widely believed to have been buried in the northeastern pier of the Roskilde Cathedral, but a DNA test in 2003 dispelled the myth as the remains belonged to a woman much too young to be Estrid. The new theory is that the sign on the pier refers to Margareta Hasbjörnsdatter, who was also known as Estrid and who married Harald III Hen, the son of Sweyn Estridsen.