Spanish Armada in Ireland with the loss of about 6,000 men. By the end of September 1588 Fitzwilliam was able to report to the Queen's secretary, Lord Burghley, that the Armada alarm was over. Soon after, he reckoned that only about 100 survivors remained in the country. In 1596, an envoy of Philip II arrived in Ireland to make inquiries of survivors and was successful in only eight cases. Following the defeat of the Armada the English sent their own fleet against the Iberian peninsula, but failed to press home their advantage and returned with similar losses. At the height of the Anglo-Spanish War
Spanish Empire a Castilian fleet sent by King Ferdinand to conquer Gran Canaria lost men and ships to the Portuguese who expelled the attack, and a large Castilian armada—full of gold—was entirely captured in the decisive battle of Guinea. The Treaty of Alcáçovas (4 September 1479), while assuring the Castilian throne to the Catholic Monarchs, reflected the Castilian naval and colonial defeat: "War with Castile broke out waged savagely in the Gulf [of Guinea] until the Castilian fleet of thirty-five sail was defeated there in 1478. As a result of this naval victory, at the Treaty of Alcáçovas in 1479 Castile, while