He played the blue-collar patriarch in "Frasier" for 11 seasons from 1993 to 2004.
Actor John Mahoney-a longtime Steppenwolf Theatre ensemble member and someone known to millions for playing the title character's father on the NBC television sitcom Frasier-died February 4 of cancer at age 77, multiple outlets have reported. On Monday night the company cancelled the scheduled opening night performance of it's current production You Got Older out of respect for the actor.
Born in Blackpool, England, in 1940, Mahoney chose to move to the U.S.at age 19 after visiting his war bride sister in the states.
In Chicago, Mahoney was a longtime and beloved ensemble member of Chicago's Steppenwolf Theatre.
Mamet and John Malkovich, another Illinois-based actor, eventually convinced Mahoney to join the Steppenwolf Theatre. He won a Screen Actor's Guild (SAG) award for this role.
Much of the comic spark in Frasier came from the relationship between the down-to-earth retired police officer Martin Crane and his pompous sons Frasier and Niles, played by Kelsey Grammer and David Hyde Pierce.
Mahoney moved to the U.S. permanently in the late 1950s and served in the U.S. Army for three years.
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Many actors have expressed their condolences on Twitter, including Modern Family star Jesse Tyler Ferguson, Ben Stiller and more.
Mahoney died of cancer Sunday in Chicago. "We were all blessed to have spent 11 glorious years together", Greenberg wrote alongside a picture of the show's cast with Mahoney.
United States actress Peri Gilpin, who appeared alongside him throughout Fasier's 263 episodes, tweeted a picture of Mahoney singing at her wedding, adding: "Watch Moonstruck, Say Anything and/or Frasier or anything you can with him in it and raise a glass to John".
Director Greg Berlanti hailed Mahoney for being "so kind and supportive of me early in my career", and helping him to greenlight the movie "The Broken Hearts Club".
Mahoney was intensely private about his personal life, but is thought to have never married, despite previously claiming to have been in several relationships.
He also appeared in such big-screen films as Tin Men, Barton Fink, Moonstruck and Eight Men Out, among others.