Impossible to find - I need his TNA file to get anywhere further. The implication is that he was brought up in another country and returned there afterwards.
1897 Born Ireland? if the arrival information below is correct. However I cannot find his birth in Ireland, or indeed anywhere else
1914 Dec 12. Arrives UK from New York, 3rd class. but no birth record in Ireland
1911 census in London
1919 Feb 5. The undermentioned Cadets to be temporary 2nd Lieutenants under the provisions of the Royal Warrant dated 30th December, 1918, promulgated in Army Order 1 of 1st January, 1919:—Arg. &- Suth'd Highrs. Clarence Cecil Campbell Cowley.
1921 Jan 24. Joined ADRIC with service no 1595. Posted to O Coy
1921 Feb 13 Posted to N Coy After Trim
1922 Jan 14 Discharged on demobilisation of ADRIC
1922 Feb 23. Relinquishes his commission. A. & S.H. Temp. 2nd Lt., and retain the rank off 2nd.Lt.: — C. C. C. Cowley.
1922 Jul/Sep Married in Newton Abbott, Devon to Ivy E Batten (a son born in Newton Abbott in 1926 - Ronald E J Cowley)