Little is known of Lt. Clarence Warnock at this time. A site dedicated to his brother John (also an RFC pilot) mentions his name and that he was a member of 59 Sqn.
"John Maxwell Warnock was born to Ellen and John Warnock on the 3 March 1890 at Lepperton New Zealand. One of six children, the family moved to Port Nelson..." source
If you have any information about Lt. Warnock, please contact me, thank you.