His father was the reigning Duke of Lorraine and his mother a member of the House of Bourbon, then ruling the Kingdom of France. He was born at the Château de Lunéville to Léopold, Duke of Lorraine and his wife Élisabeth Charlotte d"Orléans.
Three other older siblings died in an outbreak of smallpox at Lunéville: Élisabeth Charlotte (1700–1711), Marie Gabrièle Charlotte (1702–1711) and Louis (1704–1711). The smallpox epidemic had killed other royalty such as the Grand Dauphin and the Holy Roman Emperor Joseph I at the same time. In 1723 he was sent to Vienna to carry out his education under the supervision of Charles VI, his father"s first cousin.
Another reason for his journey was to forge a Habsburg-Lorraine alliance through a marriage with the Archduchess Maria Theresa.
Soon afterward the prince caught smallpox at Lunéville and quickly died at the Château there. He was buried in the Ducal Crypt at the Church of Saint-François-des-Cordeliers, Nancy.
Titles and styles
25 April 1707 – 10 May 1711 His Highness Prince Léopold Clément of Lorraine
10 May 1711 – 4 June 1723 His Highness the Hereditary Prince of Lorraine.
