[Pierre-Henri de TREYSSAC de VERGY (1734-1774) lawyer from Bordeaux, libellist and secret agent, in charge of compromising the Chevalier d'Eon in London]. His printed will with his engraved portrait at the head; in-fol. (46 x 28 cm). Rare publication by W. Humphrey, after the death in London of Treyssac de Vergy on October 10, 1774. In his will, he acknowledges his wrongs towards the Chevalier d'Éon, whom he begs to forgive him, having acted on the orders of the Count de Guerchy. Beautiful engraved portrait in aquatint. Perfect condition.