 María Teresa Álvarez de Toledo (daughter of Francisco Álvarez de Toledo, 10th Duke of Alba) became the 11th Duchess of Alba after her father's death, but she was never the Duchess of Huéscar.It was her son Fernando de Silva, born in his grandfather's lifetime, who received the title at birth.This changed in 1776, when Fernando de Silva died without a male heir and his granddaughter, Cayetana de Silva, did not have any issue from her marriage to José María Álvarez de Toledo, 15th Duke of Medina Sidonia.