"Happy Days" patriarch Tom Bosley died of lung cancer on Tuesday in Rancho Mirage, TheWrap has confirmed.
The sitcom star was 83.
Though he would forever be known as "Mr. Cunningham," Bosley scored other small screen successes in a career that spanned six decades.
The doughy character actor also played Sheriff Amos Tupper on 'Murder, She Wrote" and Father Frank Dowling on the TV mystery series,"'Father Dowling Mysteries."
Bosley last appeared in the Jennifer Lopez romantic comedy "The Back-up Plan."
"Tom Bosley was our mentor. He was a true artist … a great husband, and a fabulous father and grandfather.