William was the youngest child of Joseph and Martha Hutchinson (née Housley).
His father Joseph was born in Carlton le Moorland, Lincolnshire, in 1849, the son of John and Elizabeth Hutchinson. His mother Martha Housley was born in Brinsley, Nottinghamshire.
Joseph and Martha were married in 1875 and had six children one of whom died in childhood; all the children were born in Annesley: Esther Ann b. 1878 d. 1890, John Henry (Harry) b. 1881, Lilian b. 1883, Elizabeth b. 1886, George b. 1888 and William Leonard b. 1894. With the exception of William, all the children were baptised at Annesley All Saints.
Joseph, a coal miner, and Martha lived in Annesley from the time of their marriage, and from 1891 to 1911 were recorded on the census at 78 New Annesley.
Their eldest child Esther died in 1890 and in 1891 only four of their five surviving children were in the home on the night of the census; their eldest daughter Lilian was living with her paternal grandparents, John and Elizabeth Hutchinson, also in New Annesley.
Ten years later in 1901 Lilian was a domestic servant in Mansfield in the employ of Thomas Collins, a tobacco manufacturer, and his wife, while her four siblings were still living with their parents.
Joseph probably died in 1901 (reg. O/N/D).
In 1911 Joseph's widow was living in New Annesley with her daughter Elizabeth, a dressmaker (own account), and two of her sons, George, a coal miner loader, and William, a coal miner/driver. Also in the household was her granddaughter, Marjorie Brownson (b. 1908). Two of Martha's children were married. John, an assurance company agent, had married Mabel Emily Hardy in 1909 and they were living in East Kirkby. Lilian had married Alonzo Brownson in 1906 and they and their son Edward George were living at the Bowden Arms hotel, Clowne, Derbyshire, where Alonzo was the licensee. Their second child, Marjorie, was with Lilian's mother in Annesley.
Martha probably died in 1931.
William's brother John Henry, an insurance agent, enlisted in Nottingham on 22 February 1918 aged 36. He served as a Gunner in the Royal Marine Artillery and was demobilized on 2 April 1919. However, reports in the Mansfield Reporter and Sutton Times of appeals heard by the Kirkby Tribunal between 1916 and 1917 recorded that John had previously been allowed exemption certificates. In July 1917 an exemption certificate was allowed both on medical grounds and through his firm's appeal that 'it was impossible to replace him' as they had 'parted with 9,000 of their agents and 12 out of 16 at Kirkby.' Also, his widowed mother was solely dependent on him and 'a brother had been killed in the war.' In October 1917 he was exempted 'on condition that he works two days a week on the land.' (28 July & 4 August 1916, 27 July & 26 October 1917)