John Seymour, 4th Duke of Somerset

His Grace The Duke of Somerset
John Seymour, 4th Duke of Somerset
Duke of Somerset
Tenure	1671–1675
Predecessor	William Seymour
Successor	Francis Seymour
Titles and styles	Lord Lieutenant of Somerset Custos Rotulorum of Somerset Lord Lieutenant of Wiltshire Custos Rotulorum of Wiltshire
Born	John Seymour born 1646
Died	(1675-04-29)29 April 1675
Spouse(s)	Sarah Alston ​ (m. 1656)​
Father	William Seymour
Mother	Frances Devereux

John Seymour, 4th Duke of Somerset and 3rd Marquess of Hertford (before 1646 – 29 April 1675) was an English peer and MP.

He was the only surviving son of William Seymour, 2nd Duke of Somerset, and Lady Frances Devereux, and he entered Gray's Inn in 1666. He succeeded his nephew as the 4th Duke of Somerset in 1671. In 1656 he married Sarah, daughter and co-heiress of Sir Edward Alston and widow of George Grimston.

He was elected Member of Parliament for Marlborough in 1661.

He died in 1675, childless, and was buried in Salisbury Cathedral. He was succeeded in the dukedom by his cousin, Francis Seymour. The Marquessate of Hertford became extinct on his death.

Ancestry

Ancestors of John Seymour, 4th Duke of Somerset

Edward Seymour, 1st Duke of Somerset Edward Seymour, 1st Earl of Hertford Anne Stanhope Edward Seymour, Lord Beauchamp of Hache Henry Grey, 1st Duke of Suffolk Catherine Grey Frances Brandon William Seymour, 2nd Duke of Somerset Sir John Rogers Sir Richard Rogers Katherine Weston Honora Rogers Sir Andrew Luttrell Cecilia Luttrell Margaret Wyndham John Seymour, 4th Duke of Somerset Sir Richard Devereux Walter Devereux, 1st Earl of Essex Dorothy Hastings Robert Devereux, 2nd Earl of Essex Sir Francis Knollys Lettice Knollys Lady Catherine Carey Frances Devereux William Walsingham Sir Francis Walsingham Joyce Denny Frances Walsingham Henry St. Barbe Ursula St. Barbe Eleanor Lewknor