 Countess Maria Antonia of Waldstein-Wartenberg

Countess Maria Antoinetta Josefa Johanna Baptista of Waldstein-Wartenberg (Vienna, 29/31 March 1771 – Vienna, 17 January 1854) was a Bohemian noble and maternal grandmother of Ferdinand II of Portugal.She was a fourth child of Count George Christian of Waldstein-Wartenberg and of his wife, Countess Elisabeth Ulfeldt (granddaughter of the notorious Count Corfitz Ulfeldt).