William Kingham Dyson was born in 1866 in Chesham, and was the son of a tea merchant and grocer called Thomas Dyson. He married Mary Pomfrey in St Paul's church, St. Pancras, on 21st August, 1889. In 1891 he was living at 49 Market Square, Aylesbury and was listed as a tea merchant. In 1901 he was living at 104 High Street, Watford. In 1911 he was living at 62 Sandridge Road, St. Albans and was listed as a grocer.

Sources
• 1. Marriage Certificate. St. Paul's Church, Parish of St. Pancras. Aug 21st 1889. William Kingham Dyson. Age 25. Bachelor. Tea Merchant. 15 Marquis Road. Father: Thomas Dyson, Tea Docker. Mary Pomfrey. Age 25. Spinster. 15 Marquis Road. Father: Charles Pomfrey, Deceased. Alfred Pugh, Curate. Witnesses: Walter William Watson, Eliza Daley. • 2. 1891 Census. Market [?] Square, Aylesbury. William Dyson. Head. Age 25. Tea Merchant. Born Chesham. • 3. 1901 Census. 104 High Street, Watford. William K Dyson. Head. Age 32. Grocer. Born Chesham. • 4. 1911 Census. 62 Sandridge Road, St. Albans. William K. Dyson. Head. Age 44. Grocer, Employer. Born Chesham.