Born as the fifth and second-youngest daughter of the deposed king Miguel I of Portugal and Adelaide of Löwenstein-Wertheim-Rosenberg, Maria Ana was a titular Infanta of Portugal. Her father had been exiled, and the family lived as guests in Austria.
Despite their exiled and relatively-poor circumstances, the daughters of Miguel I made good marriages, some to reigning petty monarchs and deposed heads of Roman Catholic European dynasties.
Princess Hilda Sophie Marie Adélaïde Wilhelmine (Berg Castle, 15 February 1897 - Berg Castle, 8 September 1979), married in Berg Castle on 29 October 1930 Adolf 10te Fürst zu Schwarzenberg (Frauenberg, 18 August 1890 - Bordighera, 27 February 1950),[1] without issue
Guillaume became the reigning Grand Duke on the death of his father on 17 November 1905, and Maria Ana became the Grand Duchess, under the French version of her name, Marie Anne.
Because Guillaume IV, Grand Duke of Luxembourg was the last agnate of the House of Nassau, he declared his daughters as his successors, and Marie-Adelaide was confirmed and proclaimed Heir Apparent on 10 July 1907. Upon her father's death, she became the first reigning Grand Duchess of Luxembourg. Following her abdication on 14 January 1919, her sister, the second daughter, Charlotte of Luxembourg, succeeded her on the throne.
Grand Duchess Marie Anne was Regent for her husband during his terminal illness from 19 November 1908 to 15 February 1912, and then Regent for her daughter, Grand Duchess Marie-Adélaïde, during her minority from 25 February 1912 to 18 June 1912.
Dowager Grand Duchess Marie Anne died in exile in New York on 31 July 1942, the family having fled Germany because of World War II.
Generations indicate descent from Afonso, Duke of Braganza, founder of the House of Braganza, until João II, Duke of Braganza, the first Braganza monarch of Portugal; italics indicate a head of the House
Generations indicate descent from John IV, King of Portugal, formerly John II, Duke of Braganza, the first Braganza monarch of Portugal, until Manuel II, King of Portugal, the last monarch of Portugal, excluding the Miguelist line; italics indicate a head of the House
* also an infanta of Spain and an archduchess of Austria,** also an imperial princess of Brazil,*** also a princess of Saxe-Coburg and Gotha, Duchess in Saxony,◙ Also a princess of Braganza,ƒ title of pretense
