María Cayetana de Silva, 13th Duchess of Alba the House of Osuna. The Duchess' relationship with famed Spanish painter Francisco Goya and her somewhat eccentric personality have contributed greatly to a continuing interest in her life during the two centuries since her death. Goya executed several well-known portraits of the duchess, most of them during his stay at Sanlúcar de Barrameda (one of the Andalusian country seats of the House of Medina-Sidonia), shortly after the death of her husband, the Duke of Alba, who was also Duke of Medina Sidonia, in 1796. Goya's accompaniment of the recently widowed Duchess combined with certain innuendo expressed in his portraits of
María Cayetana de Silva, 13th Duchess of Alba was poisoned (this theory was dramatized in the film "The Naked Maja"). She had no biological issue although she did have an adoptive daughter, known as María de la Luz. After her death, the title Duke of Alba passed to a relative, Carlos Miguel Fitz-James Stuart (1794–1835), who became the 14th Duke of Alba. María Cayetana de Silva, 13th Duchess of Alba María del Pilar Teresa Cayetana de Silva-Álvarez de Toledo y Silva, 13th Duchess of Alba, GE (full name, see infobox; 10 June 1762 – 23 July 1802), was a Spanish aristocrat and a popular subject of the painter