William Henry Pratt was born on 23 November 1887, at 36 Forest Hill Road, Peckham. His parents were Edward John Pratt (1826/7–1897), of the Indian Civil Service, where he worked for the salt revenue se… See more

Pratt began appearing in theatrical performances in Canada in 1911 and during this period he chose Boris Karloff as his stage name. His presence in Regina, Saskatchewan at the Regina Theatre on the night of the … See more

Upon returning to England to live in 1959, his address was 43 Cadogan Square, London. In 1966, he bought 25 Campden House (at 29 Sheffield Terrace), Kensington W8, and Roundabout Cottage in the … See more