When William Henry Roberts was born in 1855, in Deerhurst, Gloucestershire, England, United Kingdom, his father, Henry Margrett, was 35 and his mother, Louisa Roberts, was 29. He married Elizabeth Trippick on 17 December 1878, in Deerhurst, Gloucestershire, England, United Kingdom. They were the parents of at least 2 sons and 3 daughters. He lived in Gloucester South Hamlet, Gloucestershire, England, United Kingdom for about 10 years and Gloucester, Gloucestershire, England, United Kingdom in 1901. He died on 17 January 1942, in Gloucestershire, England, United Kingdom, at the age of 87, and was buried in Deerhurst, Gloucestershire, England, United Kingdom.