Historical Events Apr 9 Marcello Cervini elected Pope Marcellus II Apr 17 Siena surrenders to Spanish troops Famous Birthdays Apr 21 Ludovico Carracci, Italian painter, born in Bologna, Italy (d. 1619) Famous Deaths Apr 12 Joanna of Castile (Joanna the mad), wife of Philip I of Castile dies at 75 1554 History by Year 1556