Nix was born in
Madison, Tennessee to June Carter Cash and her second husband Edwin "Rip" Nix.
Carlene Carter was her older half-sister from her mother's first marriage to
Carl Smith. Later she became a stepdaughter of Johnny Cash when her mother married him in 1968 and was the half-sister of their son
John Carter Cash. Her first name was spelled as both "Rosie" and "Rosey", according to stepsister
Rosanne Cash. Nix's mother nicknamed her "The Wildwood Rose" and sister Carlene wrote and recorded the song "Me and the Wildwood Rose" about the two of them traveling as children with their mother and grandmother as they performed. Nix grew up with six siblings, including half and step-siblings. == Career ==