In the novel "Gone with the Wind ", what was Scarlett O'Hara's real first name?

Katie Scarlett O'Hara is a fictional character and the main protagonist, yet somewhat antagonist in Margaret Mitchell's 1936 novel "Gone with the Wind" and in the later film of the same name. She also is the main character in the 1970 musical "Scarlett" and the 1991 book "Scarlett", a sequel to "Gone with the Wind" that was written by Alexandra Ripley and adapted for a television mini-series in 1994. During early drafts of the original novel, Mitchell referred to her heroine as "Pansy", and did not decide on the name "Scarlett" until just before the novel went to print.

O'Hara is the oldest living child of Gerald and Ellen O'Hara. She was born in 1844 or 1845 on her family's plantation Tara in Georgia. She was named Katie Scarlett, after her father's mother, but is always called Scarlett, except by her father, who refers to her as "Katie Scarlett." She is from a Catholic family of Irish and French ancestry, and a descendant of an aristocratic Savannah family on her mother's side (the Robillards). O'Hara has black hair, green eyes, and pale skin. She is famous for her fashionably small waist. Scarlett has two younger sisters, Susan Elinor ("Suellen") O'Hara and Caroline Irene ("Carreen") O'Hara, and three little brothers who died in infancy. Her baby brothers are buried in the family burying ground at Tara, and each was named Gerald O'Hara, Jr.