1917-09-19: the military record sets this as his date of death, in France while serving with 10(N) Sqn. The type of aircraft he was flying when he went missing is not given.
Grace, Edmund Victor Joseph (Flight Sub-Lieutenant)
Missing in Action 1917-September-19

Birth Date: 1896-April-13
Born:
Parents: J. P. Grace & Annie Grace
Spouse: unmarried
Home: Westmount, Montreal, Quebec
Enlistment:
Enlistment Date: unkown date
Service
RNAS
Unit
10 Sqn- Squadron (RNAS)
Base
France
Rank
Flight Sub-Lieutenant
Position
pilot
Service Numbers