According to his attestation papers dated August 21, 1915 at Toronto, Alexander Cameron Craib was born on March 18, 1890 in Insch, Scotland. He listed his mother, Margaret Craib, 173 Fern Avenue, Toronto as his next of kin. He was a piano tuner, unmarried and had no previous military experience. He was 25 years and 5 months of age and stood 5 feet 7 1/2 inches tall. He had brown eyes, black hair and dark complexion. He had an appendicitis operation scar. He was a Presbyterian.
His brother William also enlisted.
In the 1914 Toronto city directory he is listed as a labourer living on the north side of the Lake Shore Road, Humber Bay.