Locke"s parents both worked for Northrop Corporation. Her father Earl as a leadman in electrical maintenance, and her mother Lola in template control. She acted in The Voice of Charlie Pont (American Broadcasting Company, 1962) as Sally Laurents, the daughter of characters played by Robert Redford and Diana Hyland.
Earl Locke"s father had been a vaudeville performer. Locke began her acting career at the age of two years. In the 26-episode American Broadcasting Company television series The Monroes, which screened in 1966 and 1967, Locke, aged six, played Amy Monroe, the youngest of a group of siblings who had to care for themselves in northwestern Wyoming in the Wild West.
She was described by the Christian Science Monitor as "an especially endearing little dumpling" for her performance in the series, which was filmed at 20th Century Fox television in Century City, California.
Locke was unpredictable and "tumultuous" on set, giving a live frog as a gift to the show"s hairdresser. On one occasion she responded to directorial criticism by pulling on the director"s beard.
Locke"s final film appearance as a child actor was in Hang "Econometrica High which starred Clint Eastwood. Her acting work also included television commercials and voiceover recordings.
As an adult, she worked as a roller derby skater, radio presenter, and as a singer including with the band The California Express, whose last album was produced by Tex Williams in 1981.
