[1] He served in the Legislative Assembly of Manitoba as a Liberal-Progressive from 1953 to 1959, and in the House of Commons of Canada as a Liberal from 1962 to 1968.

[2] Born into one of Manitoba's most well-known Métis families, Roger Teillet was a direct descendant of Marie-Anne Gaboury and Jean-Baptiste Lagimodière,[3] who were the first white settlers in Canada's west and were also the grandparents of Louis Riel.

During the Second World War, Roger was a flight lieutenant in the Royal Canadian Air Force and a navigator on a Halifax bomber.

After evading German soldiers for 15 days, he was captured at the Rivière Cher, and spent almost three years as a prisoner of war in Stalag Luft III, located at Sagan (now Żagań, Poland), southeast of Berlin in the then-province of Silesia.

Conditions in this camp were not as brutal as in many others because it was specifically made for officers, who were not subject to forced labour.

Teillet was married to Jeanne Boux[3] of St. Boniface, Manitoba, with whom he had two sons, who in turn had two grandchildren.

For the next five years, Roger sat as a backbencher in Premier Douglas Lloyd Campbell's government.

[5] Manitoba abandoned its multi-member constituencies in 1956, and Teillet was re-elected for the now single-member seat of St. Boniface in the 1958 provincial election.

The Royal Canadian Legion was vehemently opposed to any new flag for Canada and Teillet was required to be a mediary.

[1] Teillet was then appointed to head the Canada Pension Commission by Prime Minister Pierre Trudeau.