Gadifer de La Salle (Sainte-Radegonde, 1340 –1415) was a French knight and crusader of Poitevine origin who, with Jean de Béthencourt, conquered and explored the Canary Islands for the Kingdom of Castile. Gadifer had won renown in the French campaigns against England during the Hundred Years' War (1337–1453). While on a campaign against Tunisian pirates in 1390, he met Jean de Béthencourt, who later pledged his domain to finance their expedition to the Canary Islands. Gadifer de La Salle had joined Béthencourt at La Rochelle.