According to his attestation papers dated November 15, 1915 at Toronto, Ernest Brown of Robert Street, Mimico was born on November 14, 1897 at Peterboro, Ontario. He listed his mother Christiana Brown, Robert Street, Mimico as his next of kin. He was a driver and had no previous military experience. He was 18 years of age and stood 5 feet 5 3/4 inches tall. He had blue hair, fair hair and complexion. He had a three inch scar on his left knee; a mole on his left collar bone and a small mole on his left cheek. He was a Methodist.
According to the 1921 Toronto City directory Christiana Brown was the widow of William living on the west side of Robert Street, Mimico.