Chono
Chono was a language isolate once spoken in Chile.
An isolate: no relationship to any other known language has been demonstrated.
Chono is a poorly attested extinct language of confusing classification. It is attested primarily from an 18th-century catechism, which is not translated into Spanish. Various placenames in Chiloé Archipelago have Chono etymologies.
From Wikipedia · Chono language · CC BY-SA 4.0