Leslie Samuel York Sutton was born on 23 Mar 1881, the eldest of seven children of Samuel John Sutton (1836-1906) and his third wife Emma Eliza Farmilo (1856-1939). His parents were married on 4 Mar 1880 in Hobart. Samuel Sutton was the Mayor of Launceston at the time of the Tasmanian Exhibition in 1891-92. He was also the proprietor of the Launceston Coffee Palace, where the family lived. In 1901 they moved to 'Fairlawn', 122 Elphin Road, Launceston.
In 1904 Leslie became a dentist; his brother Reginald (1889-1934) and brother-in-law Percy Mattingley (1884-1966) were also dentists. On 22 Apr 1911 Leslie married Georgina Elizabeth (Ina) Simpson at Scots' Church, Collins Street, Melbourne. Leslie was an organist at Price's Independent Church in Tamar Street. He died aged 76 on 3 Aug 1957 and had a private funeral at Carr Villa. He was buried in Section E2 No. 37. Leslie's obituary in The Examiner on 5 Aug 1957, page 6, describes him as the 'Oldest Tasmanian dentist'. Georgina died on 23 Dec 1963. See The Examiner 4 Aug 2007, page 39, for the story about Samuel Sutton.