Battle of Cape St. Vincent (1337) Seville in July 1339, mediated by Maria of Portugal. Among the treaty's provisions was a commitment by Afonso IV of Portugal to assist Alfonso XI of Castile against an impending Marinid invasion force, then assembling in Morocco. This would culminate in the Battle of Río Salado in October 1340. Battle of Cape St. Vincent (1337) The Battle of Cape St Vincent of 1337 took place on 21 July 1337 between a Castilian fleet commanded by Alfonso Jofre Tenorio and a Portuguese fleet led by the Luso-Genoese admiral Emanuele Pessagno (Manuel Pessanha). The fledgling Portuguese fleet was defeated, bringing a quick
Battle of Cape St Vincent (1797) to try to intercept the Spanish fleet. On 6 February, Jervis was joined off Cape St. Vincent by a reinforcement of five ships of the line from the Channel Fleet under Rear-Admiral William Parker. On 11 February, the British frigate HMS "Minerve", under the command of Commodore Horatio Nelson, passed through the Spanish fleet unseen thanks to heavy fog. Nelson reached the British fleet of fifteen ships off Spain on 13 February, and passed the location of the Spanish fleet to Jervis, commanding the fleet from his flagship "Victory". Unaware of the size of his opponent's fleet—in the fog, Nelson