illegitimate son of King Charles IX of France and Marie Touchet, chiefly remembered for his intrigues against King Henry IV and for his later military exploits, particularly as commander at the siege of La Rochelle in 1627.

Received favourably at the French court as a youth because of his ready wit and good looks, Charles was granted the title of comte d'Auvergne and was made colonel general of the cavalry. He served Henry IV during the religious strife of the period in his campaigns against the Catholic League, but, after Queen Margaret successfully contested his right to Auvergne, he took part in a series of conspiracies against the crown.

Pardoned for his part in the Marshal de Biron's conspiracy of 1601, he began to engage in more treasonable plots with Spain (1604) in concert with his half sister, Henriette d'Entragues, mistress of Henry IV. Soon he went into open rebellion; after his capture in 1605 he was condemned to life imprisonment. Released in 1616 to serve the Marshal d'Ancre, he was created duc d'Angoulême in 1619. The Cardinal de Richelieu gave him military commands against the Protestants at the sieges of Montauban (1621) and of La Rochelle (1627) and in Lorraine (1635). Cardinal Mazarin gave him a command in the north in 1643. Angoulême's Mémoires, first published in 1667, were reprinted in the Michaud-Poujoulat collection (1836).