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You will find this monument to Henri de la Tour d'Auvergne, Vicomte de Turenne in the l'Eglise du Dome. It is one of several such monuments.
Henri de la Tour d'Auvergne, Vicomte de Turenne, often called simply Turenne (11 September 1611 – 27 July 1675) was the most illustrious member of the La Tour d'Auvergne family. He achieved military fame and became a Marshal of France. He was one of six marshals who have been made Marshal General of France.
More here.