In 1445 an expedition was fitted out by Prince Henry himself, and the command given to Gonsalvo de Cintra, who was unsuccessful in an attack on the natives near Cape Blanco. He and some other of the principal men of the expedition lost their lives. These were the first Portuguese who died in battle on that coast. In the same year the Prince sent out three other vessels. The captains received orders from the Infante, Don Pedro, who was then Regent of Portugal, to enter the river D'Oro, and make all endeavors to convert the natives to the faith, and even, if they should not receive baptism, to make peace and alliance with them. This did not succeed. It is probable that the captains found negotiation of any kind exceedingly tame and apparently profitless in comparison with the pleasant forays made by their predecessors. The attempt, however, shows much intelligence and humanity on the part of those in power in Portugal. That the instructions were sincere is proved by the fact of this expedition returning with only one negro, gained in ransom, and a Moor who came of his own accord to see the Christian country. This same year 1445 is signalized by a great event in the progress of discovery along the African coast. Dinis Dyaz, called by Barros and the historians who followed him Dinis Fernandez, sought employment from the Infante, and, being intrusted by him with the command of a vessel, pushed boldly down the coast, and passed the river Sanaga (Senegal), which divides the Azeneghis--whom the first discoverers always called Moors--from the negroes of Jalof. The inhabitants were much astonished at the presence of the Portuguese vessel on their coasts, and at first took it for a fish or a bird or a phantasm; but when in their rude boats--hollowed logs--they neared it, and saw that there were men in it, judiciously concluding that it was a more dangerous thing than fish or bird or phantasm, they fled. Dinis Fernandez, however, captured four of them off that coast, but as his object was discovery, not slave-hunting, he went on till he discovered Cape Verd, and then returned to his country, to be received with much honor and favor by Prince Henry. These four negroes taken by Dinis Fernandez were the first taken in their own country by the Portuguese. That the Prince was still engaged in high thoughts of discovery and conversion we may conclude from observing that he rewarded and honored Dinis Fernandez as much as if he had brought him large booty; for the Prince "thought little of whatever he could do for those who came to him with these signs and tokens of another greater hope which he entertained."