Cosimo II de' Medici, Grand Duke of Tuscany (died 1621)

Cosimo II de' Medici was Grand Duke of Tuscany from 1609 until his death. He was the elder son of Ferdinando I de' Medici, Grand Duke of Tuscany, and Christina of Lorraine.

May 12 is the 132nd day of the year in the Gregorian calendar; 233 days remain until the end of the year.