
Gavan O'Herlihy
Acting
Born 1951-07-29 · Dublin, Ireland
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.
Known for

Twin Peaks
1990 · TV

Sherlock Holmes
1984 · TV

Tales from the Crypt
1989 · TV

Lonesome Dove
1989 · TV

Star Trek: Voyager
1995 · TV

Happy Days
1974 · TV

Sharpe
1993 · TV

The Mary Tyler Moore Show
1970 · TV

The Memoirs of Sherlock Holmes
1994 · TV

Jonathan Creek
1997 · TV

Midsomer Murders
1997 · TV

China Beach
1988 · TV

The Six Million Dollar Man
1974 · TV

A Rumor of War
1980 · TV

We'll Meet Again
1982 · TV

A Killing on the Exchange
1987 · TV

Cover Up
1984 · TV

Marcus Welby, M.D.
1969 · TV

Agatha Christie's Partners in Crime
1983 · TV

18 Wheels of Justice
2000 · TV

The Bionic Woman
1976 · TV

Police Woman
1974 · TV

Matt Houston
1982 · TV

The Amazing Spider-Man
1978 · TV