Execution of Girolamo Cardano's Son
Apr 13 Giovanni, son of Italian mathematician Girolamo Cardano is executed for poisoning his wife, despite his father's efforts to save him
Event of Interest
Jun 12 Battle of Okehazama: Oda Nobunaga defeats Imagawa Yoshimoto in Owari Province, Japan
Tycho Brahe's Inspiration
Aug 21 Future Danish astronomer 14-year-old Tycho Brahe becomes interested in astronomy after observing a solar eclipse
Gregory I
Gregory XIII
Julius II
Julius III
Leo X
Pius V