Notable for such piano, chamber music, and orchestral compositions as The Humours of Carrick (1938), Phantasy Trio (1940) and Suite for Strings (1951), this Northern Irish composer is also remembered for her skill as a pianist.
She received her musical training at the Royal Irish Academy of Music; Trinity College, Dublin; and London's Royal College of Music.
At the urging of composer Arthur Benjamin, she and her sister Valerie formed an acclaimed piano duo that performed throughout Europe. Her 1957 work "Blind Raftery" was the first televised operatic composition written by a woman.
The daughter of newspaper publisher Egbert Trimble and violinist Marie Trimble, she spent her youth in Enniskillen, County Fermanagh, Northern Ireland. Her marriage to physician John Gant produced three children.
British composer Ralph Vaughan Williams was one of her teachers at the Royal College of Music.