... acts of summary vengeance the Portuguese fleet proceeded to Socotra. This island, which is situated off Cape Guardafui, in such a position as to command the Gulf of Aden, had been discovered by Diogo Fernandes Pereira two years before, and had been visited by Antonio de Saldanha. They had reported the existence of Christians on the island, who wished to place themselves under the authority of the King of Portugal. King Emmanuel had for this reason, as well as ... — Rulers of India: Albuquerque • Henry Morse Stephens