According to family members, as chronicled by author/biographer William J, Mann in "Behind The Screen" (2001), it was far more than Kerrigan's stance on The Big War and who should have to be drafted that put a damper on his career, but his refusal to marry, his dedication to his mother and to his lover, James Vincent, all of whom were ensconced in one home, that also contributed to the end of his career in Hollywood. In the changing times of the early studios, without the "protection" of a business manager and publicist, Kerrigan was at the mercy of a ruthless public.
Brother of Wallace Kerrigan.
Brother of actress Kathleen Kerrigan.
In the 1920s, he lived with his mother and his life partner at 2307 Cahuenga Boulevard in Hollywood, in an area now very close to the Hollywood Bowl and the Cahuenga entrance to the 101 Freeway.
Most sources give Kerrigan's birth name as either James Warren Kerrigan or Jack Warren Kerrigan.