The Capitulations of Estella, 1386. Charles II tried to rectify his situation both in the north and in the south of the kingdom. For the first matter he participated in the Truce of Boulogne, signed France and England on 14 September 1384. In 1385 he sent the squire Arnanton de Saumon to England to arrange for the return of Gherbourg. However, the King of France, Charles VI, revoked, on 20 March 1385, the return of the Navarrese assets that he had made in the person of the Infante Charles. The latter, in the meantime, was involved in the war with Portugal, to which he had returned in July 1385. Upon his return, Castile and Navarre took a new step towards the re-establishment of friendly relations. On 16 January 1386, a capitulation took place in Estella, signed by Don Pedro de Luna, Cardinal of Aragon, and Gonzalo Moro, procurator of the King of Castile, on the one hand, and the Prior of Roncesvalles and D. Carlos II on the other. Castile ratified what had been agreed to with Prince Charles in 1383. The castles and places mentioned in El Espinal were returned. Tudela and San Vicente remained under Castilian guardianship for a year.