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.