1910  "Thar ain't no Johnny Canuck kin arrest me."
1953  There were baseball, football & lacrosse games during other seasons, but in winter there was nothing but idleness for red-blooded, sports-loving Johnny Canucks.
1b
a Canadian soldier.
1957  John comes into many nicknames, here are a few of them. John Bull . . . Johnny Canuck, a Canadian soldier, and Johnny Raw, a new recruit.
2
a personification of Canada.
1909  Failing any or all of these [desired trade goods], it was in vain that the Factor displayed before them the wares of John Bull, Uncle Sam, or Johnny Canuck, or any seductive lure made in Germany.
1959  Millions of Asians, Africans and Europeans who'll never see a travelling hockey team or a cartoon of Johnny Canuck, have only one image: the men and women of our foreign service.
1964  That's the spirit of USA which Johnny Canuck will never catch up with.
1967  As far as I know, Johnny made his first appearance as a cartoon character in an 1869 copy of Grinchuckle (page 12), a new Montreal journal that billed itself as "a magazine of mirth and opinion." The cartoonist had already translated Johnny into a Western hat and vaguely British field uniform and used him as a symbol for young Canadians regardless of language.