
Biography
Gavan O’Herlihy (29 July 1951 – 15 September 2021) was an Irish actor whose career spanned film, television, and stage, marked by a distinctive presence and a talent for commanding roles. Born in Dublin to actor Dan O’Herlihy and artist Elsie Bennett, he spent his early years between Ireland and the United States, eventually attending Phillips Academy Andover and later the University of California, where he excelled as a champion tennis player before turning fully toward acting. O’Herlihy first gained attention as Chuck Cunningham in the early episodes of Happy Days, a role he deliberately left behind to avoid being typecast in light comedic parts. He instead built a diverse and often hard‑edged body of work, appearing in major productions including Never Say Never Again (as the villainous Jack Petachi), Superman III, Death Wish 3, Willow (as the warrior Airk Thaughbaer), and the acclaimed miniseries Lonesome Dove. His television career was equally varied, with appearances in Twin Peaks, Star Trek: Voyager, The Six Million Dollar Man, Murder, She Wrote, and numerous British productions after relocating to the UK. Across more than fifty screen credits, O’Herlihy became known for portraying complex, often formidable characters — soldiers, outlaws, antagonists, and men with a dangerous edge — roles he embraced for the challenge and dramatic weight they offered. Off‑screen, he was regarded as thoughtful, private, and deeply committed to his craft, preferring character work over celebrity. He died in Bath, England, on 15 September 2021 at the age of 70, reportedly of natural causes.
Acted in 50
2000s
- 2009
- 2002
- 2000
1990s
- 1997
Sharpe: The Legend
Leroy
- 1995
- 1994
- 1993
Sharpe's Eagle
Captain Thomas Leroy
- 1991
Conagher
Chris Mahler, Cowboy
- 1990
1980s
- 1989
Red King, White Knight
Clancy
- 1988
- 1987
A Killing on the Exchange
Dan Maitland · 6 episodes
- 1985
The Dirty Dozen: Next Mission
Conrad E. Perkins
- 1984
Space Riders
Ron Harris
- 1983
- 1982
We'll Meet Again
Capt Red Burwash · 1 episode
- 1980
A Rumor of War
Stanton · 2 episodes
1970s
- 1979
Mark Twain: Beneath the Laughter
Young Clemens
- 1978
A Wedding
Wilson Briggs
Sergeant Matlovich vs. the U.S. Air Force
Art Stinson
A Death in Canaan
Father Mark
- 1977
The Ghost of Cypress Swamp
Big Bob Landers
- 1976
- 1974
The California Kid
Tom
The Healers
Movie
- 1973
Call to Danger
Mechanic
- 1970
1960s
- 1969