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 afraid to mention the baby's name. The child was baptised with the name Clara Allegra before her mother relinquished her to Byron. Byron discussed spelling Allegra's surname as "Biron" instead of as "Byron" to further distinguish her from his legitimate daughter, Augusta Ada Byron. Byron offered to pay Shelley for the expense of Allegra's upkeep during her first months of life, but Shelley indignantly refused and said the cost was a trifle. Mary Shelley had called the baby Allegra "the little Commodore" because of her sturdy body and alert, intelligent look. Byron was also pleased with Allegra's resemblances to himself