This wasn't meant to be hard. Final clues then I'll just tell you...
He was born on March 3, 1920 in Vancouver, Canada. During World War II, he was flying an artillery observation plane for the Royal Canadian Air Force. Prior to this, he had been wounded in battle on D-day. Following his military discharge, he returned to school. He eventually became one of the busiest voice artists on radio. He originally came to the US on a scholarship to the Neighborhood Playhouse in New York.