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
HACKETT
HAGEN
HAGGART
HAIGHT
HALL
HAMILTON
HAMPEL
HANSEN
HANSPIKER
HARALDSON
HARMON
HARRIOTT
HARRISON
HARRISSON
HASTINGS
HAYES
HEARSEY
HEATH
HEDDERSON
HELM
HELMAN
HERMAN
HICKS
HIEBERT
HIGGINS
HILTON
HOGG
HOUSE
HOWARTH
HOWSE
HUGHES
HULL
HUMMEL
HUOT