Antoine Jacques de Marigny (21 Nov 1811 – 3 June 1890) was a Creole military officer, merchant, planter and U.S.

He was sent to France as a young man where he attended the Academy of St. Cyr and the Royal Cavalry School at Saumur in the 1830s.

[2] Returning to New Orleans, he married Sophronie Louise Claiborne, daughter of Governor William C. C. Claiborne and his third wife, Cayetana Susana Bosque y Fangui [3] The couple had two daughters who died in infancy, Marie Felicité and Felicité Medora, and a son, James Mandeville Marigny (1849-1884).

[5][6] According to General McLaws, Antoine "spoke English, but indifferently well" and by July 1862 he resigned from his command, citing favoritism in the War Department.

[7] After the war, he found work as a broker in New Orleans while residing for much of his life in St. Tammany Parish, on the north shore of Lake Pontchartrain.