The Kingdom of the Canary Islands was a vassal state of the Crown of Castile located in North Africa, lasting from 1404 to 1448.He arrived on the island of Lanzarote (which was probably named after him) in 1312 and stayed for almost two decades until he was expelled during a revolt by the native Guanches under the leadership of their king Zonzamas.However, Béthencourt managed to calm the situation when he returned, and the Guanche leader was baptized on February 27, 1404, thus surrendering to the Europeans.Subsequently, Jean de Béthencourt was proclaimed king of the Canaries by Pope Innocent VII, even though he recognized the Castilians as overlords.Portugal formally recognised Castile as the ruler of the Canary Islands in 1479 as part of the Treaty of Alcáçovas.