This Day in History: 1386-05-16

On 16th May 1386, an Anglo-Portuguese treaty of military and naval alliance was ratified at Westminster. Portugal was to provide John of Gaunt, lord of Pontefract, with a squadron of galleys for the invasion of Castile. Due to difficulties in hiring other ships, Gaunt’s departure was delayed and he did not sail from Plymouth until the 9th July that year.