Gillmore's first professional appearance was as an unborn child in
Maurice Maeterlinck's
The Betrothal in New York City in 1918.
No Sirree! (1922), Gail Carlton in
No More Frontiers (1931), and Mrs Howard in
The Farmer Takes a Wife (1934–35). She married theatrical producer Max Sonino in Florence, Italy, in 1926. He produced the play
No More Frontiers (1931), in which she appeared. Together they translated the Italian plays
Finding Oneself (1933) by
Luigi Pirandello, and
Giovacchino Forzano's
Gutlibi and
The Bells of San Lucio. Their daughter was Mildred Sonino. Gillmore taught speech and drama at the
Buckley School. == Personal life and death ==