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John Seymour, 4th Duke of Somerset

1646 – 1675

Duke of Somerset

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About John Seymour, 4th Duke of Somerset

Lived 1646 – 1675 (aged 28–29). John Seymour, 4th Duke of Somerset was an English politician.

John Seymour, 4th Duke of Somerset and 3rd Marquess of Hertford (before 164629 April 1675) was an English peer and MP.

Life He was a younger son of William Seymour, 2nd Duke of Somerset, and Lady Frances Devereux. He was the only one of the second duke's sons still alive when his father died and the title descended to his six-year-old nephew, William.

In 1661 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. Unhappy in his marriage and having fallen out with his nephew's guardian and his mother, he entered Gray's Inn in 1666 in order to escape his creditors.

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Important facts

Born
1646
Birth century
Occupation
Nationality
Positions held
Member of Parliament in the Parliament of England, Member of the 1661-79 Parliament, Lord Lieutenant of Wiltshire, Lord Lieutenant of Somerset

Family & relationships

Parent
William Seymour, 2nd Duke of Somerset

People in John Seymour, 4th Duke of Somerset's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped John Seymour, 4th Duke of Somerset's

Frequently asked questions

Who was John Seymour, 4th Duke of Somerset?

Duke of Somerset

When was John Seymour, 4th Duke of Somerset born?

John Seymour, 4th Duke of Somerset was born in 1646.

When did John Seymour, 4th Duke of Somerset die?

John Seymour, 4th Duke of Somerset died on 29 April 1675.

What was John Seymour, 4th Duke of Somerset's occupation?

John Seymour, 4th Duke of Somerset was a politician.

What nationality was John Seymour, 4th Duke of Somerset?

John Seymour, 4th Duke of Somerset was English.

Sources & further reading

· Wikipedia: John Seymour, 4th Duke of Somerset

· Wikidata: Q3718529

· DBpedia: John Seymour, 4th Duke of Somerset

Cite this page

APA: Biography.guide. (2026). John Seymour, 4th Duke of Somerset. https://biography.guide/john-seymour-4th-duke-of-somerset/

MLA: "John Seymour, 4th Duke of Somerset." Biography.guide, https://biography.guide/john-seymour-4th-duke-of-somerset/.

Chicago: "John Seymour, 4th Duke of Somerset." Biography.guide. https://biography.guide/john-seymour-4th-duke-of-somerset/.

Data last updated: 2026-09-20 · Spot an error? Report a correction.

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