John I of Castile
John I of Castile, accompanied by allied French cavalry, then entered Portugal again by way of Ciudad Rodrigo and Celorico in July 1385 to conquer Lisbon and remove John I from the Portuguese throne, but the disastrous defeats suffered by his army in Trancoso and at the Battle of Aljubarrota in May and August 1385 had ended any possibility of his reigning as king of Portugal. He fled to Santarém and from there down the Tagus to meet the fleet near Lisbon. In September the Spanish fleet returned to Castile, and John I of Portugal gained control of the places formerly occupied by his adversaries. Advancing from Santarém, he seized the region north of the Duero whose knights had remained faithful to Beatrice and John I of Castile: Villareal Pavões, Chaves and Bragança capitulated at the end of March 1386, and Almeida in early June 1386.