Jean Allefonsce

Jean Fonteneau, dit Alfonse de Saintonge (also spelled Jean Allefonsce) or João Afonso in Portuguese (also spelled João Alfonso) (born c. 1484 in Portugal - died December 1544 or 1549 off La Rochelle) was a Portuguese navigator, explorer and corsair, prominent in the European age of discovery. He had an early career in Portugal and later served the King of France.

Born João Afonso and later known in France as Jean Fonteneau or Alfonse of Saintonge, he married a woman named Victorine Alfonse (Victorina Alfonso). Taking to the sea at age 12, he joined the Portuguese India Armadas and the Portuguese commercial fleets as they sailed past the seven seas to the coasts of Brasil, Western Africa, and around the Cape to Madagascar and Asia. His writings talk of days lasting three months, and of a vast southern continent, the Terra Australis, and the Jave la Grande, which he claims to have seen south of Southeast Asia, possibly suggesting he had approached the Arctic (by North America), Australia, and Antarctica.

Before or around 1530, for some reasons, he moved to France putting himself at the service of Francis I. The correspondence of diplomatic agents of the king of Portugal in France, in the first half of the century, tried to clarify the causes of this change of allegiance. Gaspar Palha, a Portuguese diplomat in Paris in 1531, having met a man from La Rochelle to whom he requested information concerning the pilot Jean Alfonse, wrote that he had been exiled because, when he was lost near the coast of Brittany hit by a storm, he had been involved in a quarrel (according to what was reported, with his own oldest son) that resulted in the death of his son or some man aboard; and that consequently he had been exiled and did not dare to appear in public, but it is a report by indirect testimony, and there may have been other non-criminal reasons for the exile. However, it appears that it was to escape the Portuguese Justice for some reason. Jean Alfonse left the country, later in the company of his wife and his sons. In 1531, John III attempted to repatriate the defector pilot because of his high qualifications and for his vast and possible classified knowledge. The king himself corresponded directly with Afonso, sending letters of pardon by his ambassadors and representatives and later exchanging letters with him in this attempt.

...
Wikipedia