Thelma Percy was born in Belfast, Ireland. She was the sister of Eileen
Percy, but never achieved the success her older sister did. While her
sister appeared in 61 films, Thelma had only four. In 1920, she was in
THE BEGGAR PRINCE, THE VANISHING DAGGER, and WOLF TRACKS. She was in
SEVEN YEARS BAD LUCK in her last appearance the next year.