As a young man Heneage Finch, the second son of Heneage Finch, 3rd earl of Winchilsea, by his second wife, joined his fortune to that of James Stuart, duke of York. In November 1682 he was commissioned a captain in the Coldstream Guards and, with his youth and military background, was appointed a groom of the bedchamber to the duke in 1683. He further cemented his connection with James and his court in May 1684 by marrying Anne Kingsmill, a maid of honour to Mary of Modena, and later a celebrated poet. As the king’s nominee, he won a seat for the port of Hythe in 1685 but was not particularly active in James II’s only Parliament.
While his father ultimately sided with William of Orange at the Revolution, Finch remained loyal to his master and shortly after the accession of William and Mary he resigned his military commissions, or at least he is noted as ‘wanting’ in a muster of the Coldstream Guards in the spring of 1689.
On 5 Aug. 1712 Finch inherited the title and the financially embarrassed estate from his childless nephew. Although Robert Harley, earl of Oxford, hoped to enlist his support for the upcoming session of Parliament, Winchilsea still refused to take the requisite oaths of allegiance and never sat in the House of Lords.
Thomas Hearne described Winchilsea as ‘a very honest worthy Non Juror, and an excellent antiquary’.
