Buen Retiro Palace
At the end of 1758, Charles' half brother Ferdinand VI was displaying the same symptoms of depression that their father used to suffer from. Ferdinand lost his devoted wife, Infanta Barbara of Portugal in August 1758 and would fall into deep mourning for her. He named Charles his heir on 10 December 1758 before leaving Madrid to stay at Villaviciosa de Odón where he died on 10 August 1759. In September 1760, a year after arriving in Madrid, Maria Amalia died from tuberculosis at the Buen Retiro Palace outside the capital. She was buried at the Royal Crypt in El Escorial. She was joined by her devoted husband in 1788.