Cosimo I de' Medici

Cosimo I de' Medici was the second duke of Florence from 1537 until 1569, when he became the first grand duke of Tuscany, a title he held until his death.

12 June 1519

Born on the same birth day (12 June): Antawn Jamison • Anthony Eden • Bill Cowley • Frank McCloskey • Ian Craig • Michael Fabricant • Sonia Manzano • Vladimir Arnold • Zsolt Daczi

Born in the same month (June 1519): Andrea Cesalpino • Henry FitzRoy, Duke of Richmond and Somerset • Theodore Beza