Mathew asked about the melody, which is usually known as Tramps and Hawkers. There are 13 songs in the DT with this melody listed:

CANADIAN TRAVELER
TRAMPS AND HAWKERS
THE YOUNG MAN FROM CANADA
THE LOSS OF THE ALBION
TALL MEN RIDING
SANTA CLAUS IN THE BUSH
PADDY WEST
JAUNTING CAR
DURHAM LOCKOUT
DRIVING SAW LOGS ON THE PLOVER
DAVY FAA
CAPTAIN WEDDERBURN'S COURTSHIP
BRITAIN'S MOTORWAYS