Sweyn II Estridsson of Denmark

Sweyn II Estridsson (c. 1019–1076), born in England to Ulf and Estrid, sister of Canute the Great, ruled Denmark from 1047. He fought wars against Magnus I of Norway and Harald Hardrada, who defeated him at Niså in 1062 before recognizing him in 1064.

In 1069 he allied with Edgar Ætheling and sent a force to England that took York, then accepted payment from William the Conqueror to abandon him. He organized the Danish church into bishoprics and died in 1076; five of his sons followed him on the throne.