Cosimo III de' Medici, Grand Duke of Tuscany
Cosimo III de' Medici (14 August 1642 – 31 October 1723) was the penultimate (sixth)
Medici Grand Duke of Tuscany.
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 marked by a series of ultra-reactionary laws which regulated prostitution and banned May celebrations.
His reign also witnessed Tuscany's deterioration to previously unknown economic lows.
He was succeeded by his elder surviving son, Gian Gastone, when he died, in 1723.
He married Marguerite Louise d'Orléans, a cousin of Louis XIV.
The marriage was solemnized by proxy in the King's Chapel at the Louvre, on Sunday, 17 April 1661.
It was a marriage fraught with tribulation.
Marguerite Louise eventually abandoned Tuscany for the Convent of Montmartre.
Together, they had three children:
Ferdinando in 1663, Anna Maria Luisa, Electress Palatine, in 1667, and Gian Gastone, the last Medicean ruler of Tuscany, in 1671.
In later life, he attempted to have Anna Maria Luisa recognised as the universal heiress of Tuscany, but Charles VI, Holy Roman Emperor, would not allow it because Tuscany was an imperial fief, and he felt he alone could alter the Tuscan laws of succession.
All Cosimo's efforts to salvage the plan foundered, and in 1737, upon his younger son's death, Tuscany passed to the House of Lorraine.
Giancarlo de' Medici
Giancarlo de' Medici (24 July 1611 – 22 January 1663) was an Italian cardinal of the House of Medici.
He was the second son of Grand Duke Cosimo II of Tuscany and his wife, Maria Maddalena of Austria, and the brother of Ferdinando II de' Medici, Grand Duke of Tuscany.
Claudia de' Medici
Claudia de' Medici( 4 June 1604 – 25 December 1648) was Regent of the Austrian County of Tyrol during the minority of her son from 1632 until 1646.
She was a daughter of Ferdinando I de' Medici, Grand Duke of Tuscany and Christina of Lorraine.
She was born in Florence, and was named after her grandmother Claude of Valois, herself granddaughter of Claude, Duchess of Brittany, consort to King Francis I of France.
Anna de' Medici
Anna de' Medici( 31 December
1569 – 19 February 1584) was the third child of Francesco I de' Medici, Grand Duke of Tuscany, and Joanna of Austria.
She was a member of the famous House of Medici.
Leopoldo de' Medici
Leopoldo de' Medici (6 November 1617 – 10 November 1675) was an Italian cardinal, scholar, patron of the arts and Governor of Siena.
He was the brother of Ferdinando II de' Medici, Grand Duke of Tuscany.
Cosimo II de' Medici, Grand Duke of Tuscany
Cosimo II de' Medici( 12 May 1590 – 28 February 1621) was Grand Duke of Tuscany from 1609 until his death.
He was the elder son of Ferdinando I de' Medici, Grand Duke of Tuscany, and Christina of Lorraine.
For the majority of his twelve- year reign, he delegated the administration of Tuscany to his ministers.
He is best remembered as the patron of Galileo Galilei, his childhood tutor.
Maria Cristina de' Medici
Maria Cristina de 'Medici (24 August 1609 - 9 August 1632) was a Tuscan princess and the first born child of Cosimo II de' Medici, Grand Duke of Tuscany.
Ferdinando I de' Medici, Grand Duke of Tuscany
Ferdinando I de' Medici, Grand Duke of Tuscany( 30 July
1549 – 3 February 1609) was Grand Duke of Tuscany from 1587 to 1609, having succeeded his older brother Francesco I.
Carlo de' Medici (cardinal)
Carlo de' Medici( 19 March 1595 – 17 June 1666) was the son of Ferdinando I de' Medici, Grand Duke of Tuscany and Christina of Lorraine.
Ferdinando de' Medici, Grand Prince of Tuscany
Ferdinando de' Medici (9 August 1663 – 31 October 1713) was the eldest son of Cosimo III de' Medici, Grand Duke of Tuscany, and Marguerite Louise d'Orléans.
Ferdinando was heir to the Grand Duchy of Tuscany, with the title Grand Prince, from his father's accession in 1670 until his death in 1713.
He is remembered today primarily as a patron of music.
An excellent musician himself (sometimes called "the Orpheus of princes"), he attracted top musicians to Florence and thus made it an important musical center.
Through his patronage of Bartolomeo Cristofori, Ferdinando made possible the invention of the piano.

Question: What is the date of death of Ferdinando De' Medici, Grand Prince Of Tuscany's father?
Answer: 31 October 1723