From 1795 he was given complete access to Mont Orgueil castle as a base, this reinforced Gorey harbour as the base for the ships d'Auvergne used to transport people and goods to France, messages were sometimes routed for/from French fishermen through secure drops on isolated rocks or in a lobster pot. Not only was d'Auvergne involved in the administration of French Emigres who had flocked to Jersey and passing intelligence to London, he also supported the attempted invasion at Quiberon. British and émigré forces landed at Quiberon to support the Chouans and the French Royalist and Catholic Armies on 21 July 1795.