Wikipedia
Fuegians are one of the three tribes of indigenous inhabitants of Tierra del Fuego, at the southern tip of South America. In English, the term originally referred to the Yaghan people of Tierra del Fuego. In Spanish, the term fueguino can refer to any person from the archipelago.
The indigenous Fuegians belonged to several tribes including the Ona ( Selk'nam), Haush ( Manek'enk), Yaghan (Yámana), and Alacaluf (Kawésqar). All of these tribes except the Selk'nam lived exclusively in coastal areas. The Yaghans and the Alacaluf traveled by birchbark canoes around the islands of the archipelago, while the coast dwelling Haush did not. The Selk'nam lived in the interior of Isla Grande de Tierra del Fuego and lived mainly by hunting guanacos. The Ona were exclusively terrestrial hunter gathers that hunted terrestrial game such as guanacos, foxes, tuco-tucos and upland nesting birds as well as littoral fish and shellfish. The Fuegian peoples spoke several distinct languages: both the Kawésqar language and the Yaghan language are considered language isolates, while the Selk'nams spoke a Chon language like the Tehuelches on the mainland.