Holly O'Brien, a teen actress in the 1968 feature "Yours, Mine and Ours", starring Lucille Ball, who went on to become a children's agent and casting director for commercials, died Dec. 30 at her home overlooking Lake Malibu. She was 55.
At age 13, O'Brien was cast in the comedy "Yours, Mine and Ours" playing Susan, one of Frank's (Henry Fonda's) 10 children and one of the 18 who become a family when Fonda marries Helen (Lucille Ball).
Later, O'Brien worked as a singer and dancer alongside such talents as Mitzi Gaynor, Anthony Newley, Kate Smith and Mac Davis. She also performed as a member of the international recording group St. Tropez.
As a theatrical agent, O'Brien worked at Abrams-Rubaloff & Lawrence, Jack Rose Agency, L.A. Talent, L.A. Models and her own firm, Landmark Talent, before she became a casting director.
O'Brien is survived by her fiance, Rick Squire; her sister, Rosemary O'Brien; and numerous cousins.