Jean de Béthencourt (c. 1360 – 1425), was a French explorer who, in 1402, led an expedition to the Canary Islands, landing first on the north side of Lanzarote. From there, he conquered for Castile the islands of Fuerteventura and Hierro, ousting their local chieftains (majos and bimbaches ancient peoples). Béthencourt received the title King of the Canary Islands but he recognized King Henry III of Castile, who had provided aid during the conquest, as his overlord.
To finance his expedition, in December 1401 Jean de Béthencourt had sold his house in Paris, valued at 200 gold francs, and some other small pieces of property. His uncle, Robert de Braquemont, loaned him 5,000 pounds (to which he later added another 2,000).
Béthencourt set sail from La Rochelle on May 1, 1402, with 280 men, mostly Gascon and Norman adventurers, including two Franciscan priests (Pierre Bontier and Jean le Verrier, who narrated the expedition in Le Canarien) and two Guanches who had been captured in an earlier Castilian expedition and were already baptised.
In 1402 Jean de Béthencourt conquered Lanzarote, the northernmost inhabited island. While Gadifer de la Salle explored the archipelago, Béthencourt left for Cádiz, where he acquired reinforcements at the Castilian court. At this time a power struggle had broken out on the island between Gadifer and Berthin, another officer. Local leaders were drawn into the conflict and scores of Spaniards and islanders died in what was to become a bloodbath of the first months of Béthencourt's absence. During this crisis, Gadifer managed to conquer Fuerteventura, and to explore other islands. It was only with the return of Béthencourt in 1404 that peace was restored to the troubled island. De la Salle and Béthencourt founded the city of Betancuria (as capital of the island of Fuerteventura) in 1404.
Years later, Bethencourt was defeated by the aboriginals of the island of Gran Canaria (canarios), in the battle of Arguineguin, at south of the island, getting the title of Great.
 Béthencourt surname
To this day, Betancourt and other forms of his surname are quite frequent among Canary Islanders and people of Canary Islander descent, in spite of his death without issue, thanks to the practice of baptising the natives with his surname and to the offspring of his nephew Maciot de Béthencourt who succeeded him as lord of the islands. Examples include former Colombian president Belisario Betancur, former Venezuelan president Rómulo Betancourt, and Hermano Pedro de San José de Betancurt, a saint of the Roman Catholic Church. Other modern notables in recent news are Venezuelan baseball player Rafael Betancourt, Portuguese-born American musician Nuno Bettencourt, Colombian-FrenchIngrid Betancourt, and French politician André Bettencourt. activist/politician