The "Royal Commission to enquire into and report upon the causes and effects of the General Strike which recently existed in the City of Winnipeg for a period of six weeks, including the methods of calling and carrying on such strike" (often short-titled to the Royal Commission on the Winnipeg General Strike or "The Robson Commission") was created in July 1919 by the Manitoba Government and chaired by Hugh Amos Robson.
The report, which can be read in it's entirety here, was underway but would not report back to the Province until November 6, 1919 and the report would not be made public until March 29, 1920 (I won't release the results until then either !).
Image source and a more detailed bio:
The Court of Queen's Bench of Manitoba, 1870-1950 By Dale Brawn, Osgoode Society for Canadian Legal History