Alessandro de' Medici, Duke of Florence

Alessandro de' Medici, nicknamed "il Moro" due to his dark complexion, Duke of Penne and the first Duke of the Florentine Republic, was ruler of Florence from 1530 to his death in 1537. The first Medici to rule Florence as a hereditary monarch, Alessandro was also the last Medici from the senior line of the family to lead the city. His assassination at the hands of distant cousin Lorenzaccio caused the title of Duke to pass to Cosimo I de Medici, from the family's junior branch.