Mary I of Hungary

Mary, Queen of Hungary, also known as Maria of Anjou (Hungarian: Anjou Mária, Croatian: Marija Anžuvinska, Polish: Maria Andegaweńska; 1371 – 17 May 1395), reigned as Queen of Hungary and Croatia between 1382 and 1385, and from 1386 until her death. She was the daughter of Louis I of Hungary, King of Hungary and Poland, and his wife, Elizabeth of Bosnia. Mary's marriage to Sigismund of Luxembourg, a member of the imperial Luxembourg dynasty, was already decided before her first birthday. A delegation of Polish prelates and lords confirmed her right to succeed her father in Poland in 1379.

Having no male siblings, Mary was crowned "King" of Hungary on 17 September 1382, seven days after Louis the Great's death. Her mother, who had assumed the regency, absolved the Polish noblemen from their oath of loyalty to Mary in favour of Mary's younger sister, Jadwiga of Poland, in early 1383. The idea of a female monarch remained unpopular among the Hungarian noblemen, the majority of whom regarded Mary's distant cousin, Charles III of Naples, as the lawful heir. To strengthen Mary's position, the queen mother wanted her to marry Louis I, Duke of Orléans, the younger brother of Charles VI of France. Their engagement was announced in May 1385.