Prince Henry the Navigator
Resources and income

On May 25, 1420, Henry gained appointment as the Governor of the Military Order of Christ, the Portuguese successor to the Knights Templar, which had its headquarters at Tomar in central Portugal. 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.

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.

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, and in return received a confirmation of this levy.

Henry functioned as a primary organizer of the disastrous expedition to Tangier in 1437 against Çala Ben Çala, which ended in Henry's younger brother 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.
detectable_format:number_bullet_lists[5], length_constraints:number_paragraphs[6], punctuation:no_comma