Antoine Manuel Marcel de Soto y Bermudez was the son of Dominique Bermudez and Marie Josephe de Suendo de Soto. He was born in San Juan (St. Jean) Dorron, in the Archbishopric of Santiago de Gritierce, Galicia, Spain in 1707. He immigrated to Texas sometime before 1750. He died in Bayou Chicot, Pine Priarie (Prairie Piniere), Opelousas, Louisiana, and was buried on Friday, September 6, 1799 in Opelousas, Louisiana [Southwest Louisiana Record, V. 1A, p 222].
His name has been written any number of ways: Manuel Antoine y Bermudez DeSoto, Manuel Antoine Bermudes de Soto, Emanuel Antonio de Soto y Bermudez, Antoine Manuel Marcele Bermudez y de Soto, etc.
He had apparently defected from Spanish, Texas, and went to Natchitoches, Louisiana. In 1769, when Spanish officials arrived to assume control of the previously French post of Natchitoches, they arrested Antoine for defecting and sent him to Mexico City where he spent 10 years in prison. Not long after returning home, the commandant of the Spanish Post in Natchitoches was changed, and he tricked the new commandant into believing he had received permission from the previous commandant to leave Natchitoches. He took his family and moved to Opelousas, Louisiana in 1780 or 1781.