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Maria of Serbia or Marija Branković (Serbian: Марија Бранковић, b. 1466 - d. 27 August 1495) was Princess of Serbia by birth, and Marchioness of Montferrat by marriage. She was regent of Montferrat during the minority of her son in 1494-1495. She was daughter of despot Stefan Branković of Serbia and Angelina, despotess of Serbia. In 1485, she married Boniface III, Marquess of Montferrat.