The Alliance Between England and Portugal in the Middle Ages

Help given to early Portuguese kings by English crusaders—The beginnings of the Anglo-Portuguese alliance—Correspondence of Diniz of Portugal with Edward I. and Edward II.—Proposed marriages between the English and Portuguese royal houses—Political alliance between Edward III. and Fernando, 1373—John of Gaunt and King John I. of Portugal—The Treaty of Windsor, 1386—Commercial clauses of the treaty—The Anglo-Portuguese alliance in the fifteenth century