American baritone opera singer who had an active career from the 1940s until the 1980s.
He served in the United States armed forces during World War II and then attended the Mannes School of Music.
He taught concert and opera vocal repertoire at Pennsylvania State University for fourteen years.
He was born to James and Julia Kighery Trehy and grew up with three brothers and one sister.
He performed under conductor Arthur Fiedler with the Boston Pops.