In the American sitcom "The Golden Girls", which of the four main characters was born outside of the USA?

"The Golden Girls" is an American sitcom created by Susan Harris that aired on NBC from September 14, 1985, to May 9, 1992, with a total of 180 half-hour episodes, spanning seven seasons. With an ensemble cast starring Bea Arthur, Betty White, Rue McClanahan, and Estelle Getty, the show is about four older women who share a home in Miami, Florida.

Bea Arthur plays Dorothy Zbornak (née Petrillo, latter Hollingsworth), a substitute teacher born in Brooklyn, New York City to Sicilian immigrants Sophia and Salvadore (Sal) Petrillo.

Betty White plays Rose Nylund (née Lindström), a Norwegian American, from the small farming town of St. Olaf, Minnesota.

Rue McClanahan plays Blanche Devereaux (née Hollingsworth), a Southern belle, employed at an art museum. Born into a wealthy family, Blanche grew up on a plantation outside of Atlanta, Georgia, prior to her relocation to Miami, where she lived with her husband, George, until his death.

Estelle Getty plays Sophia Petrillo, Dorothy's mother who was born in Sicily, Italy. Sophia moved to New York after fleeing an arranged marriage to Guido Spirelli. She married Salvadore "Sal" Petrillo, with whom she had three children, Dorothy, Gloria, and Phil.