Maximilian I (22 March 1459 – 12 January 1519) 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.
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Maximilian I, Holy Roman Emperor - Wikipedia
Mary of Burgundy (13 February 1457 – 27 March 1482), nicknamed the Rich, was a member of the House of Valois-Burgundy who ruled the Burgundian lands, comprising the Duchy and County of Burgundy and the Burgundian Netherlands, from 1477 to her death.
As the only child of Charles the Bold, Duke of Burgundy, and his wife Isabella of Bourbon, Mary inherited the Burgundian lands at the age of 19 upon the death of her father in the Battle of Nancy on 5 January 1477. In order to counter the appetite of the French king Louis XI for her lands, she married Maximilian of Austria, with whom she had two children.
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Mary of Burgundy - Wikipedia
Bianca Maria Sforza (5 April 1472 – 31 December 1510) was Queen of Germany and Empress of the Holy Roman Empire as the third spouse of Maximilian I. She was the eldest legitimate daughter of Duke Galeazzo Maria Sforza of Milan by his second wife, Bona of Savoy.
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Bianca Maria Sforza - Wikipedia