On this day, 315 years ago, on February 15, 1710 (January 17, 1710 in the lunar calendar), King Louis XV of France was born. Louis XV Louis XV (February 15, 1710-May 10, 1774), Louis XV was the great-grandson of Louis XIV, the Sun King. He ascended the throne at the age of 5 in 1715, with Philip II, Duke of Orleans, as the Regent at that time. From 1726 to 1743, it was the most prosperous and peaceful period of his rule. He magically continued his entire dying family and was loved by the French people in his early years in office. In the later period of his administration, court life was corrupt, and the economic problems of Louis XIV's period were not well resolved. Although he survived a disaster as a child, he ultimately failed to escape the disease and died of smallpox in 1774. And after his death he became one of France's most unpopular kings.