Frances was born in Texas to Stephen Marsh and Mae Warne. She came from a big family, and many of her siblings became involved with the film industry after they all moved to Los Angeles. Brother
Oliver became a cinematographer, and sisters Mildred,
Mae, Leslie, and
Marguerite became actresses. Frances started out as a script clerk around 1925 before making a name for herself as a film editor. She was employed as a film editor at Paramount-Famous Players by 1928; and she edited four films that year:
A Night of Mystery,
The Magnificent Flirt,
The Woman from Moscow, and
Sins of the Father. Her last known credit was on 1934's
The Merry Widow. "I have often cried right there in the cutting room while editing a particularly romantic or sentimental scene," Marsh later told a reporter. "I know that sounds sort of stupid, but after all, I'm just a fan who happens to know a little more of the technical end of pictures than the average fan." == Selected filmography ==