Mara del Carmen Gloria Contreras Roeniger, better known as Gloria Contreras was a Mexican dancer and choreographer.
Contreras was born in Mexico City. She studied dancing under Nelsy Dambr in Mexico from 1946 to 1954, and, after joining Royal Winnipeg Ballet, visited School of American Ballet in New York from 1956 to 1964, where she was taught by Pierre Vladimirov, Felia Doubrovska, Anatole Oboukhoff, Muriel Stuart and George Balanchine. From 1958 to 1965 she was also taught by Carola Trier.
Source: Wikipedia