Henry III (1 October 1207 - 16 November 1272) was the son and successor of John "Lackland" as King of England, reigning for fifty-six years from 1216 to his death. Despite his long reign, his personal accomplishments were slim and he was a political and military failure. England, however, prospered during his century and his greatest monument is Westminster, which he made the seat of his government and where he expanded the abbey as a shrine to Edward the Confessor.