About Frédéric Maurice Casimir de La Tour d'Auvergne
Frédéric Maurice Casimir de La Tour d'Auvergne (Frédéric Maurice Casimir; 24 October 1702 – 1 October 1723) styled Prince of Turenne, was the eldest surviving son of Emmanuel Théodose de La Tour d'Auvergne (1668–1730).
He died aged 20.
He was the short lived son in law of James Louis Sobieski.