I think that this is John Herbert Morgan, Edward Clarence Morgan's brother.
According to his attestation papers dated February 5, 1915 at Toronto, John Herbert Morgan was born on February 5, 1894 in Cookstown, Ontario. He listed his mother Harriet Morgan, Woodbridge, Ontario as his next of kin. He was single, a student and had no previous military experience. He was 21 years of age and stood 5 feet 8 inches tall. He had brown eyes, dark hair and a dark complexion. He was Wesleyan.
He was a member of the 2nd Div. Ammunition Col., Canadian Field Artillery when he died on December 1, 1918 from pneumonia in the Military Hospital in Dover. He is buried in the Dover (St. James) Cemetery, Dover, Kent, England.
On the War Graves Register his father Rev. Morgan is listed as living in Mimico.
His brother Edward Clarence Morgan also enlisted but was killed in the war.