[1] It quotes John Aubrey, writing in 1680 (Brief Lives, 1.43), as giving Marten's birthplace as Stoke Poges, Buckinghamshire.
[2] The History of Parliament identifies him as the second son of John Marten (d.1563), a wealthy London baker, and his wife Rose.
[4] Further confusion is sown by an anonymous writer in the Gentleman's Magazine for 1830, who refers to Anthony Marten's wife as Anne Jacob.
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.
[citation needed] In 1625 Marten was elected Member of Parliament for St Germans[3] and supported Sir John Eliot in attacking the Duke of Buckingham.
While parliament was prorogued in 1626, he was involved in the committal of Sir Robert Howard by the high commission, and when he was re-elected MP for St Germans in 1626,[3] an attempt was made to exclude him because of the case.
In 1628 he was elected MP for Oxford University, taking part in the debates on the Petition of Right[6] and sitting until 1629 when King Charles I decided to rule without parliament for eleven years.