Question: Christopher de Haro provided the financial backing to what Portuguese explorer who organised the Spanish expedition to the East Indies from 1519 to 1522? 

Context:
Pedro Fernández de Velasco, 2nd Count of Haro
Pedro Fernández de Velasco, 2nd Count of Haro (in full, Spanish: "Don Pedro Fernández de Velasco y Manrique, segundo conde de Haro, sexto Condestable de Castilla, señor de los valles de Saba y Ruesga, y de las villas de Briviesca, Puebla de Arganzón, Arnedo, Medina de Pomar, Santo Domingo de Silos, Salas de los Infantes, Villalpando, señor de Haro, Belorado, Frías, Villasiego y Herrera, Camarero mayor de Enrique IV de Castilla y de los Reyes Católicos, Merino mayor de Castilla la Vieja, Virrey y capitán general del Reino de Navarra y de las Provincias Vascongadas" ) (c. 1425 – 1492) was a Spanish nobleman and military figure of the last stages of the Reconquista.
Lope Díaz II de Haro
Lope Díaz II de Haro ""Cabeza Brava"" (b. 1170 – d. November 15, 1236) was a Spanish noble of the House of Haro, the sixth Lord of Biscay, founder of the municipality of Plentzia, and lord of Álava from 1252–1274.
 He was the eldest son of Diego López II de Haro and his wife, María Manrique.
 Lope was also a member of the Order of Santiago.
Teresa Díaz II de Haro
Teresa Díaz de Haro (born before 1254) was a Spanish noble woman and a lady of Biscay, and one of five children of Diego López III de Haro, the Lord of Biscay, and Constanza de Bearne.
 Her maternal grandparents were the viscount Guillermo II de Bearne and his wife, Garsenda de Provenza.
 Her paternal grandparents were Lope Díaz II de Haro, also Lord of Biscay, and of Urraca Alfonso de León, the illegitimate daughter of King Alfonso IX of León.
 Amongst her siblings were Diego Lopez V de Haro and Maria II Diaz de Haro.
Christopher de Haro
Christopher de Haro (in Portuguese, Cristóvão de Haro) was a Lisbon-based merchant of Flemish origin.
 As a financier and representative of the Fuggers he provided the financial backing to Ferdinand Magellan's 1519 voyage, the first circumnavigation around the world.
Maximilianus Transylvanus
Maximilianus Transylvanus (Transilvanus, Transylvanianus), also Maximilianus of Transylvania and Maximilian (Maximiliaen) von Sevenborgen (c. 1490 – c. 1538), was a sixteenth-century author based in Flanders who wrote the earliest account published on Magellan and Elcano's first circumnavigation of the world (1519–22).
 Written after he interviewed the survivors of the "Victoria", and being a relative of sponsor Christopher de Haro, his account "De Moluccis Insulis" is a main source about the expedition along with that of Antonio Pigafetta.
Luis Méndez de Haro
Luis Méndez de Haro, 6th Marquis of Carpio or Luis Méndez de Haro y Guzmán, Grandee of Spain, (in full, Spanish: "Don Luis Méndez de Haro Guzmán y Sotomayor de la Paz, sexto marqués del Carpio, segundo conde de Morente, quinto conde y tercer duque de Olivares, segundo marqués de Eliche, primer duque de Montoro, 3 veces Grande de España, Comendador mayor de la Orden de Alcántara, Gran Chanciller de las Indias, Alcaide de las Alcázares de Sevilla y Córdoba, Caballerizo mayor, gentilhombre de cámara y primer ministro de Felipe IV y su gran privado" ), (1598 – 26 November 1661), was a Spanish nobleman, political figure and general.
Victoria (ship)
Victoria (or Nao "Victoria, as well as Vittoria") was a Spanish carrack and the first ship to successfully circumnavigate the world.
 "Victoria" was part of a Spanish expedition commanded by the Portuguese explorer Ferdinand Magellan, and after his death during the voyage, by Juan Sebastián Elcano.
 The expedition began on August 10, 1519 with five ships but "Victoria" was the only ship to complete the voyage, returning on September 6, 1522.
 Magellan was killed in the Philippines.
 The ship was built at a shipyard in Gipuzkoa, with the Basques being reputed shipbuilders at the time, and along with the four other ships, she was given to Magellan by King Charles I of Spain (The Holy Roman Emperor Charles V).
 "Victoria" was named after the church of Santa Maria de la Victoria de Triana, where Magellan took an oath of allegiance to Charles V. "Victoria" was an 85 ton ship with a crew of 42.
Ferdinand Magellan
Ferdinand Magellan ( or ; Portuguese: "Fernão de Magalhães" , ] ; Spanish: "Fernando de Magallanes" , ] ; c. 1480 – 27 April 1521) was a Portuguese explorer who organised the Spanish expedition to the East Indies from 1519 to 1522, resulting in the first circumnavigation of the Earth, completed by Juan Sebastián Elcano.
Lope Díaz de Haro (d. 1322)
Lope Díaz de Haro (b. ?
 - d. October, 1322) was a Spanish noble of the House of Haro, the traditional Lords of Biscay.
 He was the firstborn son of Diego Lopez V de Haro, Lord of Biscay.
 Whilst he did not inherit his father's title of Lordship over Biscay, he is best known for being the lord of Orduña-Urduña and of Balmaseda.
 He further served as Alférez to King Ferdinand IV of Castile.
María Díaz I de Haro
María Díaz I de Haro "the Good" (1270–1342) was a Spanish noblewoman of the House of Haro.
 She was the daughter of Lope Díaz III de Haro who was assassinated by order of the king at Alfaro, La Rioja.
 She is best known for being the Lady of Biscay and for her lifelong battle against her uncle, Diego López V de Haro for the title of the lordship of Biscay.

Answer: Ferdinand Magellan