Allegra Kent taking ballet. After graduating, she joined the New York City Ballet in 1953 at the age of 15, and was promoted to principal in 1957. Many roles in George Balanchine's ballets were created for her, including "Seven Deadly Sins", "Ivesiana" and "Bugaku". She danced the role of Dewdrop in the 1958 Playhouse 90 telecast of Balanchine's version of "The Nutcracker". She performed in such ballets as "Serenade", "Agon" and "Dances at a Gathering". She retired in 1981, becoming a ballet teacher, and in 1997 published an autobiography, "Once a Dancer". In 2012, Kent published her first book for children, "Ballerina
Allegra Byron we ... call Alba, or the Dawn." He asked Byron what his plans were for the child. Later, Shelley acknowledged the child's presence was becoming something of an embarrassment. Byron asked his half-sister Augusta Leigh to take Allegra into her household, but Leigh refused. Hostile to Clairmont and initially sceptical that he had fathered her daughter, Byron agreed to take custody of Allegra under the condition that her mother have only limited contact with her. Shelley warned Clairmont that this might not, after all, be the best plan for Allegra, but Clairmont hoped that her daughter would be more financially