Sir Henry Marten also recorded as Sir Henry Martin (c. 1562 – 26 September 1641) was an English judge and politician who sat in the House of Commons at various times between 1625 and 1640.
Sir Henry Martin (akas Sir Henry Marten, Sir Henry Martyn) was born at Stoke Poges, Stoke Poges is an affluent village and civil parish in the South Buckinghamshire district of Buckinghamshire, England.
By another account he was probably born in London, supposedly the son of Anthony Marten, a merchant of London, originally from Wokingham, Berkshire, and his wife Anne Jacob, daughter of John Jacob of Bishops Stortford, Hertfordshire.
By a second account Sir Henry Marten was baptised on 2 Aug. 1562, and was the second of John Marten (died 1563), baker, of London and his wife Rose.
He was educated at Winchester College and matriculated at New College, Oxford on 24 November 1581, aged 19. He became a fellow of the college in 1582 and studied civil and canon law. He graduated BCL in 1587 and DCL in 1592, and was admitted a member of the College of Advocates on 16 October 1596. He developed a large practice as a barrister in the admiralty, prerogative, and high commission courts, and was appointed official of the archdeaconry of Berkshire.
He was elected MP for Wilton in 1586/7 and for Wootton Basset in 1604 (serving until 1611).
Marten was made King's advocate on 3 March 1609 and in March 1613 was sent abroad in connection with the marriage settlement of the Lady Elizabeth. In 1616, he was made chancellor of the diocese of London. He was knighted at Theobalds on 21 December 1616. and in 1617 became a judge of the admiralty court. Later he was appointed a member of the court of high commission and dean of the arches. Marten started investing in land in Berkshire buying firstly property at West Challow in the Vale of White Horse, secondly Longworth House at Longworth which he bought for £9,500 in 1618, and thirdly Hinton Waldrist Manor.