Ryan played Burke Devlin on the cult 1960s soap opera Dark Shadows for one series but he was fired because of his alcoholism.

He acknowledged his drinking issues in his 2021 autobiography Fall Of A Sparrow.

“I’m blessed that, 30 years a drunk, I’ve managed to live a working actor’s life to be envied,” he said.

“And I’ve lived a great deal of real life while I was at it.

“Sober for the next 30 years, I’m told that I’ve come out of it all a good and useful human being.”

Ryan had roles on many TV shows and in movies ranging from High Plains Drifter with Clint Eastwood to Halloween: The Curse Of Michael Myers.

He also performed in the theatre, including Broadway appearances in Wait Until Dark, Medea and The Price.

Kathryn Leigh Scott, who appeared with him in Dark Shadows, said in a Facebook post: “He was a great gift in my life. I cherish my warm memories of his beautiful soul. I’m heartbroken.”