Antoine Jacques Philippe de Marigny de Mandeville (also known as Antoine James de Marigny and Mandeville DeMarigny) was the son of Bernard de Marigny de Mandeville

Bernard de Marigny

Bernard Xavier Philippe de Marigny de Mandeville, was a French-Creole American nobleman, playboy, politician, and President of the Louisiana Senate between 1822-1823.-Early life:...

 and the son-in-law of William C. C. Claiborne, the first governor of Louisiana.

He attended the Academy of St. Cyr

École Spéciale Militaire de Saint-Cyr

The École Spéciale Militaire de Saint-Cyr is the foremost French military academy. Its official name is . It is often referred to as Saint-Cyr . Its motto is "Ils s'instruisent pour vaincre": literally "They study to vanquish" or "Training for victory"...

 in the 1830s before briefly serving in the French Army.

During the American Civil War

American Civil War

The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

, he was a colonel in the 10th Louisiana Infantry Regiment

10th Louisiana Infantry Regiment

The 10th Louisiana Infantry Regiment was a Louisiana infantry unit of the Confederate States of America that operated with the Army of Northern Virginia of the American Civil War...

 (" French Brigade, French Legion") and served in Virginia

Virginia

The Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...

.

He married Sophronia Louise Claiborne, daughter of the first Governor of Louisiana.