Cosimo III de' Medici, Grand Duke of Tuscany (born 1642)

Cosimo III de' Medici

Grand Duke of Tuscany from 1670 to 1723

Cosimo III de' Medici was Grand Duke of Tuscany from 1670 until his death in 1723, the sixth and penultimate from the House of Medici. He reigned from 1670 to 1723, and was the elder son of Grand Duke Ferdinando II. Cosimo's 53-year-long reign, the longest in Tuscan history, was…