Duke of Somerset years after losing his position as Lord Protector, his titles were forfeited and he was beheaded on 22 January 1552. He was replaced in the minority government of Edward VI by John Dudley, Duke of Northumberland, whose pragmatic style contrasted with Seymour's mixture of idealism and arrogance. In 1644 Charles I granted the earldom of Glamorgan to Edward Somerset (1613–1667). He was a descendant of Charles Somerset, the illegitimate son of Henry Beaufort, 3rd Duke of Somerset. In return for obtaining military help from Ireland he promised Edward the title of Duke of Somerset. Under the Commonwealth Edward was banished
Charles Seymour, 6th Duke of Somerset 1748 and was buried in the Seymour Chapel of Salisbury Cathedral in Wiltshire, where survives the elaborate monument to his ancestor Edward Seymour, 1st Earl of Hertford (1539–1621), son of the 1st Duke of Somerset. Shortly before his death he foresaw that his own line of the Seymour family was about to die out in the male line and that as was said of the 9th Duke of Norfolk (d.1777) "the honours of his family were about to pass away from his own line to settle on that of a distant relative". His son and heir apparent Algernon Seymour, Earl