Which of Sinatra's children was born Christina Sinatra?

Frank Sinatra’s child born Christina Sinatra is Tina Sinatra.

Christina Sinatra was born on June 20, 1948, in Los Angeles, the youngest child of Frank Sinatra and his first wife, Nancy Barbato Sinatra. She became widely known by the nickname Tina, which is why quiz questions and biographies usually identify her as Tina Sinatra rather than by her birth name.

Tina grew up with two older siblings: Nancy Sinatra and Frank Sinatra Jr. Her parents separated when she was young and divorced in 1951, but she remained part of one of America’s most famous entertainment families.

Unlike her father and siblings, Tina became especially associated with work behind the scenes. Her career included producing, talent representation, acting, singing and writing. She also published a memoir about her father, helping preserve personal details about the Sinatra family. AJ Lambert is Tina’s niece, while Nancy Sinatra and Frank Sinatra Jr. are her siblings, not alternate names for her.