The mother of Joseph Ferdinand of Bavaria died in what year? 
Joseph Ferdinand of Bavaria: Joseph Ferdinand Leopold of Bavaria (28 October 1692 – 6 February 1699) was the son of Maximilian II Emanuel, Elector of Bavaria (1679–1705, 1714–1726) and his first wife, Maria Antonia of Austria, daughter of Leopold I, Holy Roman Emperor, maternal granddaughter of King Felipe IV of Spain. Maria Antonia of Austria: Maria Antonia of Austria (Maria Antonia Josepha Benedicta Rosalia Petronella; 18 January 1669 – 24 December 1692) was the eldest daughter and only surviving child of Holy Roman Emperor Leopold I and his wife Margaret Theresa of Spain.
1692