Marie-Daniel Bourret, cavalier, and later Baron de Corberon, son of the President of the Paris Parliament, was born in 1748, and after serving for several years in the guard of King Louis XV, he switched to the diplomatic field. First, in 1773, he was appointed secretary of the embassy in Kassel, under the Marquis de Verac, the French envoy there, and then in 1775, he was enlisted in the same position with his uncle, the Marquis de Juigne, who was then sent by the envoy to the court of Catherine II, to replace G. Duran.