On August 10, 1519, the expedition left the port of San Lúcar de Barrameda in the direction of the Canary Islands.

On December 13 they arrived safely at Rio Janeiro.

Following the coast in search of the longed-for passage to the Pacific Ocean, they entered the Solis River—so called because its discoverer, João de Solis, a Portuguese, was murdered there. Its name was afterwards changed to that of Rio de la Plata (the Silver River).

Continuing their course, the intense cold determined Maghallanes to winter in the next large river, known then as San Julian.

Tumults arose; some wished to return home; others harboured a desire to separate from the fleet, but Maghallanes had sufficient tact to persuade the crews to remain with him, reminding them of the shame which would befall them if they returned only to relate their failure. He added that, so far as he was concerned, nothing but death would deter him from executing the royal commission.

As to the rebellious captains, Juan de Cartagena was already put in irons and sentenced to be cast ashore with provisions, and a disaffected French priest for a companion. The sentence was carried out later on. Then Maghallanes sent a boat to each of three of the ships to inquire of the captains whom they served. The reply from all was that they were for the King and themselves. Thereupon 30 men were sent to the Victoria with a letter to Mendoza, and whilst he was reading it, they rushed on board and stabbed him to death. Quesada then brought his ship alongside of the Trinidad, and, with sword and shield in hand, called in vain upon his men to attack. Maghallanes, with great promptitude, gave orders to board Quesadaʼs vessel. The next day Quesada was executed. After these vigorous but justifiable measures, obedience was ensured.

Still bearing southwards within sight of the coast, on October 28, 1520, the expedition reached and entered the seaway thenceforth known as the Magellan Straits, dividing the Island of Tierra del Fuego from the mainland of Patagonia.[2]

On the way one ship had become a total wreck, and now the San Antonio deserted the expedition; her captain having been wounded and made prisoner by his mutinous officers, she was sailed in the direction of New Guinea. The three remaining vessels waited for the San Antonio several days, and then passed through the Straits. Great was the rejoicing of all when, on November 26, 1520, they found themselves on the Pacific Ocean! It was a memorable day. All doubt was now at an end as they cheerfully navigated across that broad expanse of sea.

On March 16, 1521, the Ladrone Islands were reached. There the ships were so crowded with natives that they were obliged to be expelled by force. They stole one of the shipʼs boats, and ninety men were sent on shore to recover it. After a bloody combat the boat was regained, and the fleet continued its course westward until it hove to off an islet, then called Jomonjol, now known as Malhou, situated in the channel between Sámar and Dinagat Islands (vide map). Then coasting along the north of the Island of Mindanao, they arrived at the mouth of the Butuan River, where they were supplied with provisions by the chief. It was Easter week, and on this shore the first Mass was celebrated in the Philippines. The natives showed great friendliness, in return for which Maghallanes took formal possession of their territory in the name of Charles I. The chieftain himself volunteered to pilot the ships to a fertile island, the kingdom of a relation of his, and, passing between the Islands of Bojol and Leyte, the expedition arrived on April 7 at Cebú, where, on receiving the news, over two thousand men appeared on the beach in battle array with lances and shields.

The Butuan chief went on shore and explained that the expedition brought people of peace who sought provisions. The King agreed to a treaty, and proposed that it should be ratified according to the native formula—drawing blood from the breast of each party, the one drinking that of the other. This form of bond was called by the Spaniards the Pacto de sangre, or the Blood compact (q.v.).