Original: Battle of Casalecchio: Gian Galeazzo Visconti, the Duke of Milan, crushes the forces of Bologna and Florence, but he dies from a fever later this year and is succeeded by his son Gian Maria Visconti.
Simplified: June 26 - Battle of Casalecchio - Gian Galeazzo Visconti, the Duke of Milan, crushes the forces of Bologna, but he dies later that year.