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
Sagres Point a shelter for ships before attempting the dangerous voyage around Cape St. Vincent (could be Belixe Bay, between Sagres Point and the Cape, or Sagres Bay, to the east). Given the dangers of being blown onto the coastal rocks, captains preferred to wait in the lee of the point until favourable winds allowed them to continue. There is some question whether Sagres Point, whose name derives from "Sacrum Promontorium", or neighboring Cape St. Vincent, was the ancient sacred promontory. Strabo believed the promontory was the most westerly point of the "whole inhabited world." In fact Cape St. Vincent is more