Francesco I de' Medici, Grand Duke of Tuscany (d. 1587)
Francesco I (25 March 1541 – 19 October 1587) was the second Grand Duke of Tuscany, ruling from 1574 until his death in 1587, he was a member of the House of Medici.

1541Mar, 25
Francesco I de' Medici, Grand Duke of Tuscany
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Events on 1541
- 15Jan
New France
King Francis I of France gives Jean-François Roberval a commission to settle the province of New France (Canada) and provide for the spread of the "Holy Catholic faith". - 11Sep
Michimalonco
Santiago, Chile, is destroyed by indigenous warriors, led by Michimalonco. - 10Dec
Francis Dereham
Thomas Culpeper and Francis Dereham are executed for having affairs with Catherine Howard, Queen of England and wife of Henry VIII.