The prince was born at Versailles on 16 January 1715, the son of Jules, Prince of Soubise, lieutenant captain of the gendarmes of the Royal Guard, and of Anne Julie Adélaïde de Melun.
Pangeran lahir di Versailles pada tanggal 16 Januari 1715, putra Jules, Pangeran Soubise, kapten letnan gendarmes Pengawal Kerajaan, dan Anne Julie Adélaïde de Melun.