The first Danish invasions into the Anglo-Saxon settlements of England occurred in 787, increasing in frequency and intensity for nearly three centuries. Each of the seven kingdoms eventually fell to the Danes. Ethelred the Unready faced incredible attacks from Svein, king of Denmark, throughout his entire thirty-seven year reign. The Danes conquered England in 1013, and deposed Ethelred the Unready, who fled to Normandy. Svein reigned less than a year when he died in 1014, once again leaving the English throne in dispute. Ethelred the Unready returned to England and his hereditary throne, but died in 1016, the throne passing on to his son Edmund Ironside, who also died before the end of the year. Canute succeeded his father as king of Denmark, and ascended to the English throne upon the death of Edmund Ironside. Canute's sons Harold and Hardicanute succeeded their father. Edward the Confessor re-established the Anglo-Saxon line after the death of Hardicanute, and both the Danish and Anglo-Saxon lines came together with the succession of Harold Godwinson in 1066, only to be stalled by Harold's death at the Battle of Hastings, and the usurpation of the throne by William the Conqueror.