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. Early life Bianca was born in Pavia as the eldest daughter of Duke Galeazzo Maria Sforza of Milan, by his second wife, Bona of Savoy. She was named after her paternal grandmother, Bianca Maria Visconti. When Bianca was not yet five years old, her father was assassinated inside the Church of Santo Stefano in Milan on 26 December 1476, which was the Feast Day of St. Stephen. He was stabbed to death by three high-ranking officials of the Milanese court. On 6 January 1474 the 21-month-old Bianca was betrothed to her first cousin Duke Philibert I of Savoy, the son of her uncle Amadeus IX of Savoy, and Yolande of France. Duke Philibert I died in the spring of 1482, leaving Bianca a widow at the age of ten. She returned to Milan, under the tutelage of her uncle Ludovico Il Moro, who cared little about her education and allowed her to indulge her own interests, mainly needlework. On 31 July 1485, the engagement between Bianca and John Corvinus, the only (though illegitimate) son of King Matthias Corvinus of Hungary, was formally announced. With this marriage, the Hungarian ruler wanted to secure his son's future inheritance of Hungary and Bohemia and to make him Duke of Austria. The marriage by proxy was signed on 25 November 1487, and according to the terms of the contract, Bianca received several Hungarian counties. However, due to the opposition and intrigues of Queen Beatrix, wife of King Matthias, the formal marriage never took place. In March 1492 a marriage between Bianca and King James IV of Scotland was considered, but the idea was soon abandoned. Queen and empress [[File:Bernardino Luini 016.jpg|thumb|300px|Fresco of Empress Bianca Maria in Milan, early 16th century, by Bernardino Luini.]] On 16 March 1494 in Hall, Tyrol, Bianca married her second husband, the widowed King Maximilian I of Germany. Bianca's second marriage was arranged by her uncle, who wanted recognition and the title of duke confirmed by Maximilian; in exchange, Maximilian received a large dowry along with Bianca, 400,000 ducats. Her magnificent retinue on her way to her wedding aroused much attention. At