Sancy I of Portugal. Henry III of France suffered from premature baldness and tried to conceal this fact by wearing a cap. As diamonds were becoming increasingly fashionable at the time, Henry arranged to borrow de Sancy's diamond to decorate his cap. Henry IV also borrowed the stone, for the more practical purpose of using it as security for financing an army. Legend has it that a messenger carrying the jewel never reached his destination, but de Sancy (by then Superintendent of Finance) was convinced that the man was loyal and had a search conducted until the site of the messenger's
Achille Harlay de Sancy Charles I of England, Harlay de Sancy was attached to the queen's ecclesiastical household, but the king secured his dismissal. Harlay named the Bishop of Saint-Malo in 1631, for which he was consecrated in January 1632. He served in this post until his resignation on 20 November 1646. He died six days later. Achille Harlay de Sancy Achille de Harlay de Sancy, Cong. Orat. (1581, Paris26 November 1646), the son of Nicolas de Harlay, seigneur de Sancy, was a French diplomat and intellectual who was noted as a linguist and orientalist. He entered Church service, becoming the Bishop of Saint-Malo.