According to his attestation papers dated January 20, 1916 at Mimico, William Thomas Hosking, Elmer Street, Mimico was born on September 27, 1885 at Plymouth, England. He listed his wife, Mrs. Mary Helen Hosking, Elmer Street, Mimico as his next of kin. He was an electrician and had 6 years previous military experience with the RNR as a 1st class seaman. He was 30 years and 4 months of age and stood 5 feet 6 inches tall. He had brown eyes and dark hair and complexion. He was Presbyterian.
In the 1914 Toronto City directory he is listed as a car repr. living on the north side of Macdonald Avenue, Mimico.