Ross of Orillia
The builder you ask about might be J.H.Ross of Orillia.
There was a name change and re-location at one time in history.
I had a Ross 15' fishingboat at one time and saw an inboard Kermath launch once. A beauty.
Don't know much about his canoe building.
In the Antique and Classic boat Society [Toronto] there's listed just one 'J.H. Ross' boat.
Listed are about a dozen 'Ross'.
Listed is one 'Ross Canoe Co.', owned by a person in 'A.C.B.S.' named 'Ross'.
Nevrdun