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
Edward Seymour, 16th Duke of Somerset Depot, with the temporary rank of lieutenant-colonel (ordnance officer, 2nd class) from 4 January 1900. He eventually became Inspector of Army Ordnance Services, and retired from the army in 1918. Seymour established his claim to the dukedom in 1925, the 15th Duke of Somerset having died without issue in 1923. He was the great-great-grandson of the Very Reverend Lord Francis Seymour, fourth and youngest son of the 8th Duke. On 28 July 1881, Seymour married Rowena Wall, a daughter of George Wall, of Colombo, Ceylon. Together, they had one son: Evelyn Seymour, 17th Duke of Somerset, born on 1 May