Louis, the Grand Dauphin (le Grand Dauphin in French) (1661-1711) was the eldest son and heir of King Louis XIV of France, hence "dauphin".
He was a prestigious French military leader and was instrumental in the War of the Spanish Succession, but died in 1711 (due to natural causes) at the age of fifty, before his father.
He had married Marie-Anne of Bavaria; their sons included Louis, Duke of Burgundy (father of Louis XV of France) and Philip V of Spain.
