In 1907, the Hamilton Tigers and Toronto Argonauts of the ORFU joined with the QRFU's Montreal Foot Ball Club and Ottawa Rough Riders (Ottawa had been moving back and forth between the two unions over the past few years) to form an elite competition, the Interprovincial Rugby Football Union. The new competition was soon dubbed the "Big Four". Montreal won the first championship that year, taking home the James Dixon Trophy. In 1909 Lord Grey, the Governor General of Canada, donated a trophy to be awarded to the CRU champion. The trophy, which became known as the Grey Cup, was not won by an IRFU club until the Hamilton Tigers captured the trophy in 1913. Following the 1915 season, the competition was suspended because of the First World War, and did not fully resume until 1920.