According to his attestation papers dated January 26, 1916 at Mimico, Walter Thomas Harper, Vanevery Street, Mimico, was born on October 9, 1879 in Lickey, Worstershire, England. He listed his wife, Mrs. Evelyn Rosslyn Harper, Van Every Street, Mimico as his next of kin. He was a locomotive engineer and had no previous military experience. He was 37 years and 4 months of age and stood 5 feet 8 inches tall. He had blue eyes and dark hair and complexion. He was a Baptist.
In the 1914 Toronto City directory he is listed as an engineer living on the north side of Vanevery Street, Mimico.
In the 1921 Toronto City directory his is living on the east side of Superior Avenue, Mimico.