Many Ontario cenotaphs used initials instead of given names. An excellent site with full names and details is the Commonwealth War Graves Commission
contact John Allan if you are willing to transcribe a cenotaph or other war memorial for OGSPI
IBBOTSON
ILLIOT
IMRIE
INCE
INCH
INGERSOLL
INGRAM
INNES
IRELAND
IRISH
IRONS
IRVIN
IRVINE
IRVING
IRWIN
ISAAC
ISAAKSON
IVES
IVIN