Sir Mark Masterman-Sykes, 3rd Baronet

Sir Mark Masterman-Sykes, 3rd Baronet (20 August 1771 – 16 February 1823), born Mark Sykes, was an English landowner and politician, known as a book-collector.

Life He was eldest son of Sir Christopher Sykes, 2nd Baronet of Sledmere House, Yorkshire, by his wife Elizabeth (d. 1803), daughter of William Tatton of Withenshaw, Cheshire. He matriculated at Brasenose College, Oxford, on 10 May 1788. In 1795 he served as High Sheriff of Yorkshire, and in September 1801 succeeded on the death of his father to the baronetcy and estates.

On 14 May 1807 Sykes was returned Member of Parliament for the city of York, and retained his seat until 1820, when he retired on account of ill health. He died without issue at Weymouth, and was succeeded by his brother, Sir Tatton Sykes, 4th Baronet.

Sykes was a member of the Roxburghe Club, to which he presented a reprint of some of John Lydgate's poems in 1818. He also collected pictures, bronzes, coins, medals, and prints (with a complete set of Francesco Bartolozzi's engravings, comprising his proofs and etchings). All his collections were dispersed by sale in 1824. His library fetched nearly £10,000, and his pictures nearly £6,000.

Family Sykes was twice married: firstly, on 11 November 1795, to Henrietta, daughter and heiress of Henry Masterman of Settrington, Yorkshire, on which occasion he took the additional name of Masterman; she died in July 1813. On 2 August 1814 he married, secondly, Mary Elizabeth, daughter of William Tatton Egerton and sister of Wilbraham Tatton Egerton of Tatton Park; she survived him, dying in October 1846.