Is named for Viet Cong resistance leader Nguyen Van Troi and Irish revolutionary Jeremiah O'Donovan Rossa. Garity is his paternal grandmother's maiden name. Changed his name to Troy when he started acting.
Had an unbilled role in his mother (Jane Fonda) and grandfather's (Henry Fonda) 1981 film On Golden Pond.
As a teen, ran away with the circus when he became infatuated with one of the performers.
Is involved with two gang-violence-prevention groups.
Portrayed his father, activist Tom Hayden, a member of the Chicago Seven, in the 2000 Abbie Hoffman biopic Steal This Movie.
2004, Golden Globe — Best Performance by an Actor in a Miniseries or Motion Picture Made for Television: Nominee
2004, Independent Spirit Awards — Best Supporting Male: Nominee
Mary Williams — Sister
Frances Ford Seymour — Grandmother
Susan Brewer — Aunt
Henry Fonda — Grandfather
Peter Fonda — Uncle
Jane Fonda — Mother
Tom Hayden — Father
Simone Bent — Wife
Vanessa Vadim — Half Sister
Bridget Fonda — Cousin
Justin Fonda — Cousin
Attended University of Colorado, Boulder, Colorado, United States
Birth Name: Troi O'Donovan Hayden
Birth Place: Los Angeles, California, United States