|Ruy López de Villalobos|
|Died||April 4, 1544 (aged 43–44)|
Ambon, Moluccas Islands, Indonesia
|Known for||He gave the name Las Islas Filipinas to the Philippines to honor Philip II of Spain|
Ruy López de Villalobos (Spanish pronunciation: [rui̯ ˈlopeθ ðe βiʝaˈloβos]; ca. 1500 – April 4, 1544) was a Spanish explorer who sailed the Pacific from Mexico to establish a permanent foothold for Spain in the East Indies, which was near the Line of Demarcation between Spain and Portugal according to the Treaty of Zaragoza in 1529. Villalobos gave the Philippines their name, after calling them Las Islas Filipinas in honor of Philip of Austria, the Prince of Asturias at the time, who later became Philip II of Spain. In 1542 he also discovered a Pacific group of islands, most likely Hawaii, but the Spaniard kept the discovery secret. 
López de Villalobos was commissioned in 1541 by the Viceroy of New Spain, Antonio de Mendoza, who was the first colonial administrator in the New World, to send an expedition to the Islas del Poniente, meaning Islands of the West, now known as the Philippines. His fleet of six galleon ships, the Santiago, San Jorge, San Antonio, San Cristóbal, San Martín, and San Juan, left Barra de Navidad, Jalisco, Mexico with 370 to 400 men on November 1, 1542. The fleet first encountered the Revilla Gigedo Islands off the west coast of Mexico, among which the sighting of Roca Partida was reported for the first time. On 26 December 1542 they sighted a group of islands in the Marshalls that they called Corales (Corals in Spanish), which most probably are those of the Wotje Atoll. They thought these to be the Los Reyes islands previously charted by Álvaro de Saavedra in his 1528 expedition. They anchored at one of the islets that they named San Esteban (St. Stephen). They left on 6 January 1543 and that same day they sighted several small islands on the same latitude as the Corales, which they named Los Jardines (The Gardens), which were those of Kwajalein. On 23 January 1543 the expedition found Fais in the Carolines that they charted as Matelotes.  On 26 January 1543 they charted some new islands as Los Arrecifes (The Reefs) which have been identified as the Yaps also in the Carolines.  
According to Oskar Spate with Villalobos there was the pilot Juan Gaetan, credited for the discovery of Hawaii by La Perouse.  Gaetan's voyage is described in similar terms, with the same sequence of islands in 1753, with no identification to any others known at the time, which is an a posteriori conjecture.  In 1825, Casado Giraldes, a Portuguese geographer states that the Sandwich Islands were discovered by Gaetan in 1542, and does not even mention James Cook. 
Between January 6 to 23, 1543, the galleon San Cristóbal piloted by Gines de Mafra, who was a member of the crew of the Magellan expedition in 1519-1522, was separated from the fleet during a severe storm. This ship eventually reached the island of Mazaua, a place were Magellan anchored in 1521. This was the second visit of de Mafra to the Philippines, which is identified today as Limasawa in the southern island of Leyte. The story of Limasawa was written in 1667 by a Jesuit priest, Friar Francisco Combés. His documents on "Limasawa" has been translated by historians. 
On February 29, 1543, they entered Baganga Bay, which they named Malaga on the eastern coast of Mindanao. López de Villalobos named Mindanao " Caesarea Karoli" after the Holy Roman Emperor, Charles V of Spain. The fleet stayed there for 32 days; the entire crew suffered extreme hunger. He ordered his men to plant corn but it failed. On March 31, 1543, the fleet left in search of Mazaua for food. Because of low-winds they could not sail on. After several days of struggle, they reached Sarangani.
The galleon San Cristóbal, which had been driven ashore on Limasawa Island 2 months before, appeared unexpectedly with a load of rice and other foodstuffs for the commander. On August 4, 1543, the San Juan, and San Cristóbal were sent back to Leyte and Samar for more food, with the San Juan to stock up for the Pacific crossing and to proceed to Mexico.  A Portuguese contingent arrived on August 7, and delivered a letter from Jorge de Castro, governor of the Moluccas, demanding an explanation for the presence of the fleet in Portuguese territory. López de Villalobos responded, in a letter dated August 9, that they were not trespassing, and were within the Demarcation Line of the Crown of Castile.
The San Juan left for Mexico on August 27, 1543, with Bernardo de la Torre as captain. Another letter from Castro arrived in the first week of September with the same protest, and López de Villalobos wrote a reply dated September 12, 1543, with the same message as his first. He departed to Abuyog, Leyte with his remaining ships, the San Juan, and the San Cristóbal. The fleet could not make headway because of unfavorable winds. In April 1544, he sailed for Island of Amboyna. He, and his crew members then made their way to the islands of Samar, and Leyte, which he named Las Islas Filipinas (The Philippine Islands) in honour of the Prince of Spain, Philip II. Driven away by hostile natives, hunger, and a shipwreck, López de Villalobos was forced to abandon his settlements in the islands, and the expedition. He, and his crew members sought refuge in the Moluccas, where they quarrelled with the Portuguese, who imprisoned them.
López de Villalobos died on April 4, 1544, in his prison cell on the island of Amboyna, of a tropical fever, or as the Portuguese said "of a broken heart".  Some 117 remaining crew members survived, among them were de Mafra, and Guido de Lavezaris. De Mafra produced one manuscript on the Magellan-Elcano circumnavigation, and had this delivered to Spain by a friend on board. They sailed for Malacca, where the Portuguese put them on a ship bound for Lisbon. Thirty elected to remain, including de Mafra. His manuscript remained unrecognized for many centuries. It was discovered in the 20th century, and published in 1920.
An account of the voyage based on the recollections of a surviving Italian sailor, Juan Gaetano, was published in 1550-1559 by Giovanni Battista Ramusio, an Italian historian, in his Navigationi et Viaggi ("Navigations and Travels"); a collection of explorers' first-hand accounts of their travels which also included accounts of Marco Polo, Magellan, Alvar Nuñez Cabeza de Vaca and others. 
- de Jesus, Vicente C. (2002). Mazaua Historiography. Retrieved February 27, 2007.
- De la Costa', Horacio. 1958. "The Villalobos Expedition 1542-1546." In: The Bulletin of the Philippine Historical Association, No. 5, September.
- Escalante Alvarado, García de. 1546. Colección de documentos inéditos relativos al descubrimiento, conquesta y organización de las Antiguas posesiones españolas en América y Oceania (42 v., Madrid, 1864-1884), tomo v, pp. 117–209.
- Howgego, Ramond John. 2002. Encyclopedia of Exploration. Sydney: Hordern House.
- Lach, Donald. 1965. Asia in the Making of Europe. Vol. 1, Chicago, p. 643.
- Noone, Martín J. The Discovery and Conquest of the Philippines 1521-1581. Ireland, 1983.
- Quanchi, Max (2005). Historical Dictionary of the Discovery and Exploration of the Pacific Islands. The Scarecrow Press. ISBN 0810853957.
- Rebelo, Gabriel. 1561. Historia das ilhas de Maluco. In: Documentação para a História das Missões do Padroado Português do Oriente: Insulíndia. Lisboã: Agencia Geral do Ultramar. 1955. Cited by José Manuel Garcia in As Filipinas na historiografía portuguesa do século XVI,Centro Portugués de Estudos do Sudeste Asiático, Porto: 2003.
- Santisteban, Fray Geronimo de. 1546. Colección de documentos inéditos relativos al descubrimiento, conquesta y organización de las antiguas posesiones españolas en América y Oceania (42 v., Madrid, 1864–1884), tomo v., pp. 151–165.
- Sharp, Andrew. 1960. The Discovery of the Pacific Islands. London: Osford University Press.
- Oskar Spate, "The Spanish Lake" (1979). Pages 108-109 (2004 edition): «On the maps of today the Hawaiian Islands lie so blatantly between the east and west-bound tracks of the Galleons, that it seems almost mandatory that some stray must have found them. The inference was first drawn by La Pérouse, who deduced from Spanish charts that islands named "La Mesa", "Los Majos", and "La Disgraciada", in the right latitude but too much far to the east were in fact the Hawaiian group, La Mesa ("the Table") in particular being the main island with the great table-massif of Mauna Loa; the error in longitude was put down to Spanish failure to allow for currents. On one such chart is a note saying that Juan Gaetan, who was with Villalobos in 1542, discovered the group, and named it Islas de Mesa, in 1555; unluckily this chart also gives Cook's name, the Sandwich Islands.»
- Quite surprisingly for the Spaniards, upon their arrival to Fais the local people approached the ships in canoes making the sign of the cross and saying "Buenos días, matelotes!" in perfect sixteenth century Spanish ("Good day, sailors!"), this being an evidence that one of the previous Spanish expeditions had been in the area
- Coello, Francisco (1885). La Cuestión de las Carolinas. Discursos pronunciados en la Sociedad Geográfica de Madrid por su presidente Don Francisco Coello con un mapa, notas y apuntes bibliográficos sobre los antiguos descubrimientos de los españoles en los archipielagos de la Micronesia y sus cercanias. Madrid: Imprenta Fontanet. pp. 82–87.
- Sharp, Andrew (1960). The discovery of the Pacific Islands. Oxford: Clarendon Press. p. 26.29.
- Histoire Generale des Voyages: ou nouvelle collection de toutes les relations de voyages par mer et par terre, qui ont été publiées jusqu'à présent dans les différentes langues de toutes les nations connues contenant ce qu'il y a de plus remarquable (French edition). Peter de Hondt. (1747-1768). Volume 16 (1753).
- Joaquim Casado Giraldes, Tratado completo de cosmographia e geographia (Volume 1), 1825 (p. 26) «SANDWICH - (ilhas e arquipélago de), compõem-se de 11 ilhas no oceano Pacífico, que foram descobertas em 1542, por Gaetan, espanhol, e terão 40 000 almas. O clima é assaz temperado, o terreno é fértil e fazem algum comércio.» (Sandwich, islands and archipelago, are composed of 11 islands in the Pacific Ocean, discovered in 1542, by Gaetan, spanish, and they will have 40 000 souls....)
- The Great Island - Studies in the exploration and Evangelization of Mindanao. www.google.com.
- William Henry Scott (1985) Cracks in the Parchment Curtain ISBN 971-10-0073-3 p51
- William Henry Scott (1985) Cracks in the Parchment Curtain ISBN 971-10-0073-3 p54
- Quanchi, Historical Dictionary of the Discovery and Exploration of the Pacific Islands, page 247