Il est marié avec Marguerite Louise d'ORLEANS.
Ils se sont mariés le 20 juin 1661 à Tuscany, Italy, il avait 18 ans.
Enfant(s):
Cosimo III de' Medici (14 August 1642 - 31 October 1723) was the penultimate 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 Florence was nominally an imperial fief, and he felt he alone could alter the Tuscan laws of succession. All Cosimo's efforts to salvage the plan floundered, and in 1737, upon his younger son's death, Tuscany passed to the House of Lorraine.
Cosimo de' Medici was born on 14 August 1642, the eldest surviving son of Vittoria della Rovere of Urbino, and Ferdinando II de' Medici, Grand Duke of Tuscany. Their previous two children had died shortly after birth. Grand Duke Ferdinando wished to give his son the finest scientific education available, but the pious Grand Duchess Vittoria opposed. The latter got her way. Volunnio Bandinelli, a Sienese theologian, was appointed Cosimo's tutor. His character was analogous to the Grand Duchess's.
By 1659, Cosimo had ceased smiling in public. He frequently visited places of religious worship and surrounded himself with friars and priests, concerning Grand Duke Ferdinando. Cosimo's only sibling, Francesco Maria de' Medici, the fruit of his parents' brief reconciliation, was born the next year.
Marguerite Louise d'Orléans, a granddaughter of Henry IV of France, was married to Cosimo by proxy on 17 April 1661 at the Palais du Louvre. She arrived in Tuscany on 12 June, disembarking at Livorno, and made her formal entry to Florence on 20 June to much pageantry. As a wedding gift, Grand Duke Ferdinando presented her with a pearl the "size of a small pigeon's egg."
The marriage was unhappy from the start. A few nights following the formal entry, Marguerite Louise demanded the Tuscan crown jewels for her own personal use; Cosimo refused. The jewels that she did manage to extract from Cosimo were almost smuggled out of Tuscany by her attendants but for the efforts of Ferdinando's agents. Marguerite Louise's extravagances perturbed Ferdinando because the Tuscan exchequer was nearly bankrupt; it was so empty that when the Wars of Castro mercenaries were paid for, the state could no longer afford to pay interest on government bonds. Accordingly, the interest rate was lowered by 0.75%. The economy, too, was so decrepit that barter trade became prevalent in rural market places. In August 1663 Marguerite Louise delivered a boy: Ferdinando. Two more children followed: Anna Maria Luisa in 1667 and Gian Gastone in 1671.
Ferdinando beseeched Louis XIV to do something about his daughter-in-law's behaviour; he sent the Comte de Saint Mêmê. Marguerite Louise wanted to return to France, and Mêmê sympathised with this, as did much of the French court, so he left without finding a solution to the heir's domestic disharmony, incensing both Ferdinando and Louis XIV. She humiliated Cosimo at every chance she got: she insisted on employing French cooks, as she feared the Medici would poison her. In September 1664 Marguerite Louise abandoned her apartments in the Pitti, the grand ducal palace. Cosimo moved her into Villa Lapeggi. Here, she was watched by forty soldiers, and six courtiers, appointed by Cosimo, had to follow her everywhere. The next year she reconciled with the grand ducal family, and gave birth to Anna Maria Luisa, future Electress Palatine, in August 1667. The delicate rapprochement that existed between Marguerite Louise and the rest of the family collapsed after Anna Maria Luisa's birth, when Marguerite Louise caught smallpox and decided to blame Cosimo for all her problems.
On 22 September 1723 the Grand Duke experienced a two-hour-long fit of trembling. His condition steadily deteriorated. Cosimo was attended by the Papal nuncio and the Archbishop of Pisa on his death bed. The latter pronounced "that this Prince required little assistance in order to die well, for he had studied and cared for nothing else throughout the long course of his life, but to prepare himself for death." On 25 October 1723, six days before his death, Grand Duke Cosimo disseminated a final proclamation commanding that Tuscany shall stay independent; Anna Maria Luisa shall succeed uninhibited to Tuscany after Gian Gastone; the Grand Duke reserves the right to choose his successor. Alas, these stanzas were completely ignored. Six days later, on All Hallow's Eve, he died. He was interred in the Basilica of San Lorenzo, the Medici necropolis.
Cosimo III left Tuscany one of the poorest nations in Europe; the treasury empty and the people weary of religious bigotry, the state itself was reduced to a gaming chip in European affairs. Among his enduring edicts is the establishment of the Chianti wine region. Gian Gastone repealed Cosimo's Jewish persecution laws, and eased tariffs and customs. Cosimo's inability to uphold Tuscany's independence led to the succession of the House of Lorraine upon Gian Gastone's death in 1737.
Issue
Cosimo III had three children with Marguerite Louise d'Orléans, a granddaughter of Henry IV of France:
Ferdinando de' Medici, Grand Prince of Tuscany (b.1663 d.1713) married Violante Beatrice of Bavaria, no issue;
Anna Maria Luisa de' Medici, Electress Palatine (b.1667 d.1743) married Johann Wilhelm, Elector Palatine, no issue;
Gian Gastone de' Medici, Grand Duke of Tuscany (b.1671 d.1737) married Anna Maria Franziska of Saxe-Lauenburg, no issue.
Cosimo did not enjoy a harmonious relationship with his elder son, Ferdinando. They disagreed about Cosimo's bigoted ideology and his monthly allowance. Cosimo married him to a Bavarian princess, Violante Beatrice. This union was exceedingly discontent, and produced no offspring. Anna Maria Luisa was the Grand Duke's favourite child. She married Johann Wilhelm, Elector Palatine, and like her brother, had no issue. Gian Gastone, Cosimo's eventual successor, despised his father and his court. Anna Maria Luisa arranged for him to marry Anna Maria Franziska of Saxe-Lauenburg, a union that produced no children.
SOURCE: Wikipedia - https://en.wikipedia.org/wiki/Cosimo_II_de%27_Medici,_Grand_Duke_of_Tuscany
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