"Preste Iuan de las Indias" (Prester John of the Indies) positioned in East Africa on a 16th-century Spanish Portolan chart
He was said to rule over a Nestorian (Church of the East) Christian nation lost amid the Muslims and pagans of the Orient, in which the Patriarch of the Saint Thomas Christians resided. The accounts are varied collections of medieval popular fantasy, depicting Prester John as a descendant of the Three Magi, ruling a kingdom full of riches, marvels, and strange creatures.
At first, Prester John was imagined to reside in India; tales of the Nestorian Christians' evangelistic success there and of Thomas the Apostle's subcontinental travels as documented in works like the Acts of Thomas probably provided the first seeds of the legend. After the coming of the Mongols to the Western world, accounts placed the king in Central Asia, and eventually Portuguese explorers convinced themselves that they had found him in Ethiopia.
Prester John had been considered the ruler of India since the legend's beginnings, but "India" was a vague concept to the Europeans. Writers often spoke of the "Three Indias", and lacking any real knowledge of the Indian Ocean, they sometimes considered Ethiopia one of the three. Westerners knew that Ethiopia was a powerful Christian nation, but contact had been sporadic since the rise of Islam. Despite the existence of the Saint Thomas Christians in southern India, especially the Malabar coast, they were a minority in a majority Hindu area and did not rule themselves, so Europeans concluded that no Prester John was to be found in Asia. European imagination then moved him around the blurry frontiers of "India" until it found an appropriately powerful kingdom for him in Ethiopia. Evidence has suggested that locating Prester John's kingdom in Ethiopia entered the collective consciousness around 1250.
Marco Polo had discussed Ethiopia as a magnificent Christian land and Orthodox Christians had a legend that the nation would one day rise up and invade Arabia, but they did not place Prester John there. Then in 1306, 30 Ethiopian ambassadors from Emperor Wedem Arad came to Europe, and Prester John was mentioned as the patriarch of their church in a record of their visit. Another description of an African Prester John is in the Mirabilia Descripta of Catalan Dominican missionary Jordanus Catalani, around 1329. In discussing the "Third India", Jordanus records a number of fanciful stories about the land and its king, whom he says Europeans call Prester John.
After this point, an African location became increasingly popular. This may have resulted from increasing ties between Europe and Africa as 1428 saw the Kings of Aragon and Ethiopia actively negotiating the possibility of a strategic marriage between the two kingdoms. On 7 May 1487, two Portuguese envoys, Pêro da Covilhã and Afonso de Paiva, were sent traveling secretly overland to gather information on a possible sea route to India, but also to inquire about Prester John. Covilhã managed to reach Ethiopia. Although well received, he was forbidden to depart. More envoys were sent in 1507, after Socotra was taken by the Portuguese. As a result of this mission, and facing Muslim expansion, regent queen Eleni of Ethiopia sent ambassador Mateus to king Manuel I of Portugal and to the pope, in search of a coalition. Mateus reached Portugal via Goa, having returned with a Portuguese embassy, along with priest Francisco Álvares in 1520. Francisco Álvares' book, which included the testimony of Covilhã, the Verdadeira Informação das Terras do Preste João das Indias ("A True Relation of the Lands of Prester John of the Indies") was the first direct account of Ethiopia, greatly increasing European knowledge at the time, as it was presented to the pope, published and quoted by Giovanni Battista Ramusio.
By the time Emperor Lebna Dengel and the Portuguese had established diplomatic contact with each other in 1520, Prester John was the name by which Europeans knew the Emperor of Ethiopia. The Ethiopians, though, had never called their emperor that. When ambassadors from Emperor Zara Yaqob attended the Council of Florence in 1441, they were confused when council prelates insisted on referring to their monarch as Prester John. They tried to explain that nowhere in Zara Yaqob's list of regnal names did that title occur. However, their admonitions did little to stop Europeans from calling the King of Ethiopia Prester John. Some writers who used the title did understand it was not an indigenous honorific; for instance Jordanus seems to use it simply because his readers would have been familiar with it, not because he thought it authentic.
Ethiopia has been claimed for many years as the origin of the Prester John legend, but most modern experts believe that the legend was simply adapted to fit that nation in the same fashion that it had been projected upon Ong Khan and Central Asia during the 13th century.[50] Modern scholars find nothing about Prester John or his country in the early material that would make Ethiopia a more suitable identification than any place else, and furthermore, specialists in Ethiopian history have effectively demonstrated that the story was not widely known there until well after European contact. Czech Franciscan Remedius Prutky asked Emperor Iyasu II about this identification in 1751, and Prutky states that the man was "astonished, and told me that the kings of Abyssinia had never been accustomed to call themselves by this name." In a footnote to this passage, Richard Pankhurst states that this is apparently the first recorded statement by an Ethiopian monarch about this tale, and they were likely unaware of the title until Prutky's inquiry.
