Cecilia Parker (April 26, 1914 – July 25, 1993).
Cecilia Parker was a Canadian-born American film actress. She was best known for portraying the sister Marian Hardy in the extremely popular Andy Hardy film series in the late 1930s and early 1940s. She was in the original Hardy film, A Family Affair (1937).
Donna Reed appears with her in The Courtship of Andy Hardy (1942) which was the 12th film in the Andy Hardy series. Donna's obituary in the Los Angeles Times claims that she complained to Louis B. Mayer about her frumpy role.