Magellan named the strait Todos los Santos,[13] as he began his voyage through the strait on November 1, 1520, the day of "All Saints" (Todos los Santos in Spanish). Charles V renamed it Estrecho de Magallanes.[citation needed] Magellan named the island on the south side of the strait Tierra del Fuego, which the Yaghan people called Onaisín in the Yaghan language. Magellan also gave the name Patagones to the mainland Indians, and their land was subsequently known as Patagonia.[citation needed]