The father of Pietro de' Medici was the Duke of Florence between what years?
Pietro de' Medici Don Pietro de' Medici (3 June 1554 – 25 April 1604) was the youngest son of Cosimo I de' Medici, Grand Duke of Tuscany and Eleonora di Toledo.
Vittoria della Rovere Vittoria della Rovere (7 February 1622 – 5 March 1694) was Grand Duchess of Tuscany as the wife of Grand Duke Ferdinando II. She gave her husband four children, two of whom would survive infancy: the future Cosimo III, Tuscany's longest-reigning monarch, and Francesco Maria, a prince of the Church. At the death of her grandfather Francesco Maria della Rovere, she inherited the Duchies of Rovere and Montefeltro, which reverted to her second son, Francesco Maria, at her death. She was later entrusted with the care of her three grandchildren. Her marriage brought a wealth of treasures to the House of Medici, which can today be seen in the Palazzo Pitti and the Uffizi Gallery in Florence.