Maria Margareta of Dietrichstein
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Maria Margareta of Dietrichstein (Maria Margareta Josefa; 18 April 1637 – 15 December 1676), was an Austrian noblewoman, born in Moravia, member of the House of Dietrichstein, and by marriage Princess Montecuccoli and Duchess of Melfi.
Maria Margareta was born as the tenth child and sixth (but fifth surviving) daughter of Maximilian, 2nd Prince of Dietrichstein zu Nikolsburg, and his first wife, Princess Anna Maria of Liechtenstein, a daughter of Karl I, Prince of Liechtenstein and Duke of Troppau and Jägerndorf.