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
Frances Seymour, Duchess of Somerset thus incurred the Queen's wrath. Essex was executed on 25 February 1601 for allegedly conspiring to murder the Queen. He left behind his wife and small children; Frances was less than two years old at the time. Frances's brother was Robert Devereux, 3rd Earl of Essex, and she had an elder sister, Dorothy. She also had three younger half-siblings from her mother's third marriage in 1603 to Richard Burke, 4th Earl of Clanricarde. These were Honora, Mary and Ulick Burke, 1st Marquess of Clanricarde. On 3 March 1616, Frances married at Drayton Bassett William Seymour, 2nd Duke of Somerset (1588-1660),