Gavan O'Herlihy Biography
Sorry there is no Biography!
Trivia

Son of
Dan O'Herlihy.

Played the lost son "Chuck Cunningham" in the first season of
Happy Days. Is actually younger (by about two months) than
Ron Howard, who played his "younger" brother on the show.

Was an avid tennis player in his youth, even becoming the Irish National Tennis Champion.

Often cast as a villain or antagonistic character. Examples of this include his roles in
Death Wish 3 and
Superman III. The character Airk from
Willow is one of the few heroic roles that he has played during his career.

Brother-in-law of
Cornelia Hayes O'Herlihy.

Nephew of
Michael O'Herlihy.

Uncle of
Micaela O'Herlihy and
Colin O'Herlihy.

Brother of
Cormac O'Herlihy and
Patricia O'Herlihy.
Source provided by imdb (Copyright) - The Internet Movie Database.