Francesco I Sforza
In 1454 at the age of six, she was betrothed to Filippo Maria Sforza (1448–1492), the son of Francesco I Sforza, Duke of Milan, and Bianca Maria Visconti. The contract was dated 13 December 1454. For reasons unknown, the betrothal was annulled, and he married instead his cousin, Costanza Sforza.