Louis XV of France
Louis XV (15 February 1710 – 10 May 1774), known as Louis the Beloved (), was a monarch of the House of Bourbon who ruled as King of France from 1 September 1715 until his death in 1774. He succeeded his great-grandfather Louis XIV at the age of five. Until he reached maturity (then defined as his 13th birthday) on 15 February 1723, the kingdom was ruled by Philippe II, Duke of Orléans, as Regent of France.
Cardinal Fleury was his chief minister from 1726 until the Cardinal's death in 1743, at which time the young king took sole control of the kingdom.
Marie Leszczyńska
In 1723, the Duke of Bourbon had become the Regent of France during the minority of Louis XV. The Regent was highly dominated by his lover, Madame de Prie. There were long-ongoing negotiations of a marriage between Marie and the now widowed Duke of Bourbon: Madame de Prie favored the match, as she did not perceive the reputedly unattractive Marie as a threat to her. The marriage negotiations, however, were soon overshadowed when a marriage for King Louis XV was given priority. That same year, the young king fell ill and, fearing the consequences of the unmarried king dying without an heir, the Duc suggested getting the young King married as soon as possible. Louis XV was already engaged, to Infanta Mariana Victoria of Spain, who had been brought to France as his future queen some years earlier and was referred to as the Infanta-Queen. However the Infanta was still a child, and could not be expected to conceive for several years; while Louis XV, being fifteen, had already hit puberty. After Louis fell seriously ill, there was a great fear that he would die before he had time to have an heir to the throne. Should that happen, the throne would pass to the Orléans line. This was an undesirable prospect for the Duke of Bourbon, who himself would in fact have preferred that the throne should pass to the Spanish line rather than to the Orléans line. The engagement between Louis XV and the Spanish Infanta was broken, and the latter was sent back to Spain, much to the chagrin of the Spanish. The Duke of Bourbon and Madame de Prie began negotiations for the immediate marriage of the King to Marie.