James Francis Edward Stuart
He married his brother's widow, Maria Karolina Sobieska, the granddaughter of John III Sobieski, in 1723. She was the older sister of Clementina Sobieski, wife of James Francis Edward Stuart. They had two children, a son and a daughter. Their only daughter, Marie Louise Henriette Jeanne de La Tour d'Auvergne, was a famous adventuress, guillotined in 1793.