Countess Maria Antonia von Waldstein (; 4 March 1771, Vienna â 17 January 1854, Vienna) was a Bohemian noblewoman who married into the Hungarian nobility.
Born on 4 March 1771 in Vienna, into a family of ancient Bohemian nobility, Antonia was the fourth child of Count Georg Christian von Waldstein (1743âÂÂ1791) and his wife, Countess Elisabeth von Ulfeldt (1747âÂÂ1791). She was the great-granddaughter of the notorious Count Corfitz Ulfeldt. By birth, she was a member of the prominent House of Waldstein.
On 13 February 1792 in Vienna, Antonia married the Hungarian nobleman Ferenc József, Prince Koháry de Csábrág et Szitnya, a member of the enormously affluent House of Koháry, with whom she had two children â Ferenc (1792âÂÂ1798) and Mária Antónia (1797âÂÂ1862), who married the German Prince Ferdinand of Saxe-Coburg and Gotha and bore four children. Mária Antónia was the mother of King Ferdinand II of Portugal and grandmother of King Ferdinand I of Bulgaria.
Antonia died on 17 January 1854 in Vienna.