The prince was born at the Palace of Versailles on 16 July 1715, the son of Jules, Prince of Soubise, lieutenant captain of the Gendarmes of the Royal Guard, and of Anne Julie Adélaïde de Melun.
On July 16, 1715, a prince was born at the Palace of Versailles to Jules, Prince of Soubise, who served as a lieutenant captain in the Royal Guard, and Anne Julie Adélaïde de Melun.