[1][2] Chamberlain, whose first name was spelled "Irwin" in his hometown newspaper, reportedly began his hockey career in Shawville, PQ.

He was reportedly added to the Toronto Maple Leafs reserve list by 1937 after steadily improving his game while playing in Northern Ontario.

[3] The Sudbury Tigers then travelled to Calgary, Alberta to play for the Allan Cup against the Western Canada senior champs, the North Battleford Beavers.

As the Allan Cup champions, the Sudbury Tigers earned a berth in the one and only Toronto International Tournament in April, 1937 which pitted them against the English National League champs (Wembley Lions), the USA Amateur Champions (Hershey Bears) and the Memorial Cup Champs (Winnipeg Monarchs).

The Sudbury Tigers scored a sudden-death in the third game of a 3-game final against the Wembley Lions to win the tournament.