"Dr. Lawrence Victor Croft , of London , Ont . , died on May 19 , 1941. He was born in 1877 , the son of the late Mr. and Mrs. William Croft."
Found in Canadian Medical Association Journal, Vol. 45, 1941, p. 90. Google eBooks snippet view
Graduated from McGill Faculty of Medicine. (The Canadian Practitioner, 1903, p. 393.)
BUT I can't find him on any passenger lists or WWI lists and your photo is of a man in uniform. :(