Cosimo I de' Medici was Duke of Florence

Duke of Florence

Il Duca di Firenze, rendered in English as The Duke of Florence, was a title created in 1532 by Pope Clement VII. There were effectively only two dukes, Alessandro de' Medici and Cosimo de' Medici, the second duke being elevated to The Grand Duke of Tuscany, causing the Florentine title...

, ruling from 1537 to 1574, and became the first Grand Duke of Tuscany. Cosimo was born in Florence

Florence

Florence is the capital city of the Italian region of Tuscany and of the province of Florence. It is the most populous city in Tuscany, with approximately 370,000 inhabitants, expanding to over 1.5 million in the metropolitan area....

, the son of the famous condottiere Giovanni dalle Bande Nere

Giovanni dalle Bande Nere

Lodovico de Medici also known as Giovanni dalle Bande Nere was an Italian condottiero.-Biography:Giovanni was born in the Northern Italian town of Forlì to Giovanni de' Medici and Caterina Sforza, one of the most famous women of the Italian Renaissance.From an early age, he demonstrated great...

 from Forlì

Forlì

Forlì is a comune and city in Emilia-Romagna, Italy, and is the capital of the province of Forlì-Cesena. The city is situated along the Via Emilia, to the right of the Montone river, and is an important agricultural centre...

. Cosimo came to power when Alessandro de' Medici was assassinated in 1537 because Alessandro's only male issue was illegitimate. He was from a different junior branch (il Popolani) of the family.

Ancestors in three generations

Cosimo I de ' Medici Cosimo I de' Medici, Grand Duke of Tuscany Cosimo I de' Medici was Duke of Florence from 1537 to 1574, reigning as the first Grand Duke of Tuscany from 1569.-Biography:... Grand duke of Tuscany See Descendants Descendants of Cosimo I de Medici -Descendants in three generations:...	Father	Paternal Grandparents	Paternal Great-Grandparents
	Lodovico de' Medici Giovanni dalle Bande Nere Lodovico de Medici also known as Giovanni dalle Bande Nere was an Italian condottiero.-Biography:Giovanni was born in the Northern Italian town of Forlì to Giovanni de' Medici and Caterina Sforza, one of the most famous women of the Italian Renaissance.From an early age, he demonstrated great... Giovanni dalle Bande Nere Giovanni dalle Bande Nere Lodovico de Medici also known as Giovanni dalle Bande Nere was an Italian condottiero.-Biography:Giovanni was born in the Northern Italian town of Forlì to Giovanni de' Medici and Caterina Sforza, one of the most famous women of the Italian Renaissance.From an early age, he demonstrated great... il Popolani Medici	Giovanni the Popolano Giovanni de' Medici il Popolano Giovanni de' Medici, later known as il Popolano was an Italian nobleman of the Medici House of Florence. He was the son of Pierfrancesco di Lorenzo de' Medici, and therefore a member of a secondary branch of the family.-Biography:Giovanni was born in Florence... il Popolani Medici	Pierfrancesco de' Medici (the Elder) il Popolani Medici
			Laudomia Acciaiuoli
		Caterina Sforza Caterina Sforza Caterina Sforza, Countess of Forlì was an Italian noblewoman, the illegitimate daughter of Galeazzo Maria Sforza, Duke of Milan and Lucrezia Landriani, the wife of the courtier Gian Piero Landriani, a close friend of the Duke... Countess of Forlì	Galeazzo Maria Sforza Galeazzo Maria Sforza Galeazzo Maria Sforza was Duke of Milan from 1466 until his death. He was famous for being lustful, cruel and tyrannical.... Duke of Milan
			Lucrezia Landriani Lucrezia Landriani Lucrezia Landriani , was the mistress of Galeazzo Maria Sforza, Duke of Milan, and the mother of his renowned illegitimate daughter, Caterina Sforza, Lady of Imola, Countess of Forlì...
	Mother	Maternal Grandparents	Maternal Great-Grandparents
	Maria Salviati Maria Salviati Maria Salviati was an Italian noblewoman, the daughter of Lucrezia di Lorenzo de' Medici and Jacopo Salviati. She married Giovanni dalle Bande Nere and was the mother of Cosimo I de Medici. Her husband died November 30, 1526, leaving her a widow at the age of 27...	Jacopo Salviati Jacopo Salviati Jacopo Salviati was an Italian politician born in Florence on 15 September 1461.Son of Giovanni Salviati and Maddalena Gondi, he devoted himself in the economic affairs of the family, becoming very wealthy. He then engaged in political life... (1461–1533)	Giovanni Salviati Giovanni Salviati Giovanni Salviati was an Italian Cardinal and diplomat. He was papal legate in France, and conducted negotiations with the Emperor Charles V.... (d. c.1470)
			Maddalena Gondi (1437–1503)
		Lucrezia di Lorenzo de' Medici (1470-c.1550) il Cafaggiolo Medici	Lorenzo de' Medici Lorenzo de' Medici Lorenzo de' Medici was an Italian statesman and de facto ruler of the Florentine Republic during the Italian Renaissance. Known as Lorenzo the Magnificent by contemporary Florentines, he was a diplomat, politician and patron of scholars, artists and poets... (1449–1492) il Cafaggiolo Medici
			Clarice Orsini Clarice Orsini Clarice Orsini was the daughter of Jacopo Orsini, Lord of Monterotondo and Bracciano, and his wife and cousin Maddalena Orsini. Born in the Papal States, she is most known as the wife of Lorenzo de' Medici , de facto ruler of the Florentine Republic...