Editing Prince Henry the Navigator (section)

== Resources and income ==
[[File:Arms of Henry of Portugal, Duke of Viseu.svg|thumb|left|upright=.6|[[Portuguese heraldry|Coat of arms]] of Prince Henry as [[Duke of Viseu]]. ]]
On  May 25, 1420, Henry gained appointment as the Governor of the [[Order of Christ (Portugal)|Military Order of Christ]], the Portuguese successor to the [[Knights Templar]], which had its headquarters at [[Tomar]] in central Portugal.<ref name=Prestage>[http://www.newadvent.org/cathen/07239a.htm Prestage, Edgar. "Prince Henry the Navigator." The Catholic Encyclopedia] Vol. 7. New York: Robert Appleton Company, 1910. 23 May 2015</ref> Henry held this position for the remainder of his life, and the Order was an important source of funds for Henry's ambitious plans, especially his persistent attempts to conquer the [[Canary Islands]], which the Portuguese had claimed to have discovered before the year 1346.

In 1425, his second brother the Infante [[Peter, Duke of Coimbra]], made a diplomatic tour of Europe, with an additional charge from Henry to seek out geographic material. Peter returned with a current world map from Venice.<ref name=Rush>{{cite web| url = http://www.21stcenturysciencetech.com/Articles_2014/Henry_Navigator.pdf| title = Rush, Timothy. "Prince Henry the Navigator and the Apollo Project that Launched Columbus", ''21st Century'', summer, 1992}}</ref>

In 1431, Henry donated houses for the ''[[Estudo Geral]]'' to teach all the sciences—grammar, logic, rhetoric, arithmetic, music, and astronomy—in what would later become the [[University of Lisbon]]. For other subjects like medicine or philosophy, he ordered that each room should be decorated according to the subject taught.
[[File:98401-Tomar (48914397516).jpg|thumb|Prince Henry ordered construction of the ''Paços Henriquinos'' (Henrician Palace) at the [[Convent of Christ]] in [[Tomar]], to serve as his residence when he was appointed as Governor of the [[Military Order of Christ|Order of Christ]] in 1420.]]
Henry also had other resources. When John I died in 1433, Henry's eldest brother [[Edward of Portugal]] became king. He granted Henry all profits from trading within the areas he discovered as well as the sole right to authorize expeditions beyond [[Cape Bojador]]. Henry also held a monopoly on tuna fishing in the [[Algarve]]. When Edward died eight years later, Henry supported his brother [[Peter, Duke of Coimbra]] for the regency during the minority of Edward's son [[Afonso V of Portugal|Afonso V]], and in return received a confirmation of this levy.

Henry functioned as a primary organizer of the disastrous [[Battle of Tangier (1437)|expedition to Tangier]] in 1437 against Çala Ben Çala, which ended in Henry's younger brother [[Ferdinand the Saint Prince|Ferdinand]] being given as hostage to guarantee Portuguese promises in the peace agreement. The [[Portuguese Cortes]] refused to return [[Ceuta]] as ransom for Ferdinand, who remained in captivity until his death six years later. Prince Regent Peter supported Portuguese maritime expansion in the Atlantic Ocean and Africa, and Henry promoted the colonization of the [[Azores]] during Peter's regency (1439–1448). For most of the latter part of his life, Henry concentrated on his maritime activities and court politics.<ref name="Bradford, 1960"/>