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
John Jervis, 1st Earl of St Vincent John Jervis, 1st Earl of St Vincent Admiral of the Fleet John Jervis, 1st Earl of St Vincent (9 January 1735 – 14 March 1823) was an admiral in the Royal Navy and Member of Parliament in the United Kingdom. Jervis served throughout the latter half of the 18th century and into the 19th, and was an active commander during the Seven Years' War, American War of Independence, French Revolutionary War and the Napoleonic Wars. He is best known for his victory at the 1797 Battle of Cape Saint Vincent, from which he earned his titles, and as a patron