Corneille de Schonamille was husband of Jeanne Ursule, step-daughter of Joseph François Dupleix, then Governor General of French India. His wife was sixth daughter of Mme. Dupleix by her first husband Mr. Vincens. He married Jeanne Ursule Vincens in 1743. His father name was François Corneille de Schonamille for whom he was the only son. Corneille resided in Austria and was educated at Paris. During his training at paris he stayed with Dupleix de Baquencourt, who was brother of Joseph Dupleix.