His daughter, Sarah Dunsworth, announced his death on Twitter Monday, saying in a statement that her father died "peacefully after a short and unexpected illness." She didn't say where or when Dunsworth died.
Ryan Cameron, a spokesman for the actor, tells The Associated Press that he's "heartbroken and will miss him dearly."
Dunsworth played Mr. Lahey on Trailer Park Boys, which developed a cult following during its initial run on Canada's Showcase from 2001 to 2007 before being revived by Netflix in 2014.
Dunsworth also had a recurring role as Dave Teagues for several seasons on the SyFy and Showcase series Haven.