Mr Mark Victor Middleton (saloon steward, 2nd class) was born in Ash, Martock, Somerset, England on 12 November 1887. His birth was registered in Yeovil in the first quarter of 1888 and he was baptised on 1 January 1888 in Ash Chapelry.

He was the son of William Augustine Middleton (b. 1852), a stone mason, and Harriet Shumarck (b. 1855). His father was native to Martock and his mother from Tintinhull, Somerset and they had married in 1873, producing eleven children with nine living past infancy. Their known children, besides Mark, were: George (b. 1875), Naomie (b. 1876), Albert Edward (b. 1879), Thomas (b. 1881), William Arthur (b. 1883), Ephraim (b. 1884), Rosa Kate (b. 1889), Florence Annie (b. 1890) and Henry Charles (b. 1893).

Mark first appears on the 1891 census living at an unspecified address in Ash, his father now being described as a jobbing mason and his mother as a glove maker. The family address is given as 89 Bristol Road, Bridgewater, Somerset on the 1901 census and his father was now described as an agent for an assurance company. Mark, aged 13, had already left school and was working as a domestic servant, later working as a time keeper. Between that time and the 1911 census the family shifted from Somerset to London and appear living at 48 Felsham Road, Putney. Mark was described as an unmarried care taker at a technical institute whilst his father was unemployed.

Mark had spent a brief time serving in the Royal Navy, joining the Boscawen III on 4 April 1905  for one voyage, ending on 13 June 1905. He was described as standing at 5' 6" and with dark brown hair, brown eyes and a dark complexion.

When he signed-on to the Titanic, on 4 April 1912, Mark gave his address as 48 Felsham Road, Putney, London. The Titanic was his first merchant ship. As a second class steward he received monthly wages of £3, 15s.

Mark Middleton died in the sinking. His body, if recovered, was never identified.

His parents continued to live in London, his father passing away in 1927 followed by his mother in 1931.