Maria Pavlovna (16 February [O.S. 5 February] 1786 – 23 June [O.S. 11 June] 1859) was a grand duchess of Russia as the daughter of Paul I, Emperor of all the Russias, and later became the Grand Duchess of Saxe-Weimar-Eisenach by her marriage to Charles Frederick of Saxe-Weimar-Eisenach (1783–1853). Wikipedia