Born in Catalina, Newfoundland, one of two children of David Charles and Emilie Sarah (Bursey) Granger, Granger was educated at St. Peter's Anglican High School.
Granger was elected as a Liberal MP for the Newfoundland riding of Grand Falls__White Bay__Labrador and later in the 1958 election. He was re-elected in 1962, 1963, and 1965.
In August 1966 he resigned from the House of Commons and became a MLA for the District of Gander in the Newfoundland and Labrador House of Assembly and was appointed Minister of Labrador Affairs. Granger resigned from the House of Assembly on September 25, 1967 and, after winning a 1967 federal by-election in the riding of Bonavista--Twillingate, he was appointed Minister without Portfolio. He was defeated by John Howard Lundrigan in the 1968 election.
Following his defeat, Granger from 1968 to 1975 was a vice-president of Shaheen Natural Resources Company.
Granger was a Cajun music accordionist and played music with J. Fuselier and the Eunice Playboys, Ellis Vanicor and the Lacassine Playboys, Sidney Brown, the Lake Charles Ramblers, Robert Bertrand, and many others.
Granger was born in Duralde, Louisiana in 1921.
Granger died in 2005 and is a member of the Cajun French Music Association Hall of Fame.
Granger was elected as a Liberal Member of Parliament (MP) for the riding of Grand Falls--White Bay--Labrador in the 1958 election.
Granger resigned from the House of Assembly on September 25, 1967, and returned to the House of Commons after winning a 1967 federal by-election in the riding of Bonavista—Twillingate following the retirement of Cabinet minister Jack Pickersgill.
Granger won the seat and was appointed Minister without Portfolio in the cabinet of Prime Minister Lester Pearson and kept the position when Pierre Trudeau became Prime Mnister of Canada the following year.