Benoît, baron Costaz was a French bishop.

Entering holy orders before 1789, he refused to swear to the Civil Constitution of the Clergy

Civil Constitution of the Clergy

The Civil Constitution of the Clergy was a law passed on 12 July 1790 during the French Revolution, that subordinated the Roman Catholic Church in France to the French government....

 and took refuge in Savoy, Switzerland then Turin. He was removed from the list of émigré

Émigré

Émigré is a French term that literally refers to a person who has "migrated out", but often carries a connotation of politico-social self-exile....

s in 1800 and on his return to Paris and the Concordat of 1802 was made curé of the Église de la Madeleine

Église de la Madeleine

L'église de la Madeleine is a Roman Catholic church occupying a commanding position in the 8th arrondissement of Paris. It was designed in its present form as a temple to the glory of Napoleon's army...

, then bishop of Nancy on 22 October 1810, by imperial decree, holding the bishopric until the Bourbon Restoration

Bourbon Restoration

The Bourbon Restoration is the name given to the period following the successive events of the French Revolution , the end of the First Republic , and then the forcible end of the First French Empire under Napoleon  – when a coalition of European powers restored by arms the monarchy to the...

 in 1814.

Baron de l'Empire and chevalier de la Légion d'honneur

Légion d'honneur

The Legion of Honour, or in full the National Order of the Legion of Honour is a French order established by Napoleon Bonaparte, First Consul of the Consulat which succeeded to the First Republic, on 19 May 1802...

, Monseigneur Costaz is buried at the Père Lachaise cemetery

Père Lachaise Cemetery

Père Lachaise Cemetery is the largest cemetery in the city of Paris, France , though there are larger cemeteries in the city's suburbs.Père Lachaise is in the 20th arrondissement, and is reputed to be the world's most-visited cemetery, attracting hundreds of thousands of visitors annually to the...

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His brother was baron Louis Costaz

Louis Costaz

Louis, baron Costaz Louis, baron Costaz Louis, baron Costaz (17 March 1767, Champagne-en-Valromey (Bugey – 15 February 1842, Paris was a French scientist and administrator.His brother Gastroass was bishop of Nancy. After studying maths, he taught at the military school at Thiron until 1793,...

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