From material compiled by Mrs. Edwin A. (Jo C.) Smith, Jr. of Baton Rouge, Louisiana:

Francois Marie de Reggio was of the family of the Dukes of Reggio and Modena, of the ancient Italian noble house of d'Este. He descended from a line that went to France under the patronage of Louis XIV. Francois was a cousin of the Marquis de Vaudreuil, the 7th Provincial Governor of Louisiana. He had served in Europe under the Cardinal, Duc de Richelieu, who recommended him for a high place in Louisiana. He was Commandant of the Arkansas Post in 1753-54. He became a member of the Spanish Cabildo. In 1783 he was Judge of New Orleans. In the third generation from Francois, he was the ancestor of General Pierre Gustave Toutant-Geauregard of the Confederacy.

Archdiocese of New Orleans Sacramental Records, Volume 4, 1784-1790, page 93:

Francisco Maria de Reggio, 55 yr. regidor, alferez real of this government, i. Oct. 7, 1787 (SLC, F2, 12

• Reference: Geneanet Genealogy - SmartCopy: Sep 17 2018, 22:37:27 UTC

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https://en.wikipedia.org/wiki/Fran%C3%A7ois_Marie,_Chevalier_de_Reggio

Francois Marie, Chevalier de Reggio was the great-grandfather of Confederate General P.G.T. Beauregard, one of the most famous generals in the American Civil War.[4] Among his descendants is also director Godfrey Reggio.

Francesco Maria de Reggio,[1][2] known in French as François Marie, Chevalier de Reggio (Alba, Italy, 1698 – New Orleans, 1787) was an Italian nobleman who was a member of the House of Este.[3] He was a distinguished commander in the War of the Austrian Succession, and an influential government official in Louisiana.