Source: Michael Doyle Their Name Liveth For Evermore: The Great War Roll of Honour for Leicestershire and Rutland.
He was the son of Frank Collumbell a baker, born 1865 in Derby and his wife Jessie, born 1864 in Runcorn, Ches. William Edgar was born in 1899 in Marlpool, Derbys., his siblings were, Arthur H., born 1888 and Mary, born 1887, the latter two siblings were both born in Derby, Frank Alfred, born 1890 and Dorothy B., born 1895 the latter two siblings were both born in Long Eaton, Derbys., Claude born 1897, Walter, born 1898 and Godfrey, born 1901, the latter three siblings were all born in Marlpool, Derbys., in March 1901 the family home was at Prospect Street, Heanor, Derbys. In April 1911 William was residing in the family home at 15, Cattle Market, Loughborough, Leics., together with his parents and siblings, Mary, Arthur, Dorothy, Frank, Claude, Walter, Godfrey and Jessie, born 1904 in Marlpool, Derbys. His elder brother Frank Alfred also died from wounds received in action.