Facts and Events
Ulf (or Ulf Jarl) was a Danish earl (jarl). As a Viking chieftain he participated in Cnut the Great's conquest of England as one of his most trusted men. He married Cnut's sister Estrid Svendsdatter and from c. 1024 he was his appointee as regent of Denmark, probably as the guardian of Cnut's young son Harthacnut. After Ulf joined Olaf II of Norway and Anund Jacob of Sweden in a coalition against Cnut, Cnut had him killed in Roskilde. He was the father of Sweyn II of Denmark, King of Denmark from 1047 to 1074.