William Box was the youngest son of Thomas and Eva (nee Windsor) Box from Oxhey, who had eight children. Eva grew up in Villiers Road, Oxhey, where her father, Frederick Windsor, was a shoemaker. She became a domestic servant and in the 1880s. They married 1 July 1884 at St James’, Bushey, Herts. Thomas died 22 July 1942 in Oxhey aged 80, and was buried 27 July at St James’, Bushey; Eva died 27 December 1945 in Oxhey aged 87, and was buried 1 January 1946, also at St James.
Thomas was a plasterer and they made their first home in Merry Hill Lane (later called School Lane). William was born either 1894 or 1895.
On the 1901 Census, aged 5 he lived in Bushey, with his parents and seven siblings. On the 1911 Census, a yard boy aged 16, he lived in Oxhey, with his mother and six siblings. All their children were born in Bushey and when they left school they became tradesmen or domestic servants.
By 1911, the family had moved to 20, Upper Paddock Road, Oxhey. William Box was then 16 and working as a yard boy for a coal merchant. He later resided in Watford.