According to his first set of attestation papers dated February 18, 1916 at Lindsay, John Lewis Jarvis was born on May 13, 1897 at Hull, England. He listed his mother Anne Jarvis (Fred crossed out), 11 Northcote Avenue, Toronto as his next of kin. He indicated he was a plumber and that he had no previous military experience. He was 18 years and 8 months of age and stood 5 feet 3/4 inches tall. He had blue eyes, dark brown hair and a fair complexion. He had a scar under his chin. He was a member of the Church of England.
According to his second set of attestation papers dated January 13, 1919 at Toronto, he was born on May 13, 1899 and was a driver. He indicated that he had 2 years and 1 month previous military experience with the 208th Battalion and that he had been discharged for rheumatism. He listed his mother's address as 41 O'Hara Avenue, Toronto. His age is listed as 19 years, 8 months.
According to the 1911 census he was actually born in May 1901 so he was actually only 14 years old when he enlisted in February 1916.
He was the son of Fred Jarvis and brother of Fred Jarvis who was killed in 1918.