Mary of Burgundy, Sovereign Duchess regnant of Burgundy, married to Maximilian I, Holy Roman Emperor (died 1482)

Mary of Burgundy, nicknamed the Rich, was a member of the House of Valois-Burgundy, and ruler in her own right over much of the Valois-Burgundian lands, from 1477 to 1482. Her effective rule extended over major part of the Burgundian Netherlands, while she also claimed the rest of the Burgundian inheritance, including domains that were seized by her cousin, the French king Louis XI in 1477, such as the Duchy of Burgundy, the Free County of Burgundy and several other lands, both within the Kingdom of France and the Holy Roman Empire.

Maximilian I was King of the Romans from 1486 and Holy Roman Emperor from 1508 until his death in 1519. He was never crowned by the Pope, as the journey to Rome was blocked by the Venetians. He proclaimed himself elected emperor in 1508 at Trent, with Pope Julius II later recognizing it. This broke the tradition of requiring a papal coronation for the adoption of the Imperial title. Maximilian was the only surviving son of Frederick III, Holy Roman Emperor, and Eleanor of Portugal. From his coronation as King of the Romans in 1486, he ran a double government, or Doppelregierung with his father until Frederick's death in 1493.