"Ucayali" is the name of one of the major dialects of the Asheninca, or Campa, language.
The name Ucayali is not actually an Asheninca name at all; it is the name of a river
in the unrelated Shipibo language,
and has also been used as the name of one of the regions of Peru.
The Ucayali River is a major river more than 900 miles long, and the Asheninca and Shipibo people
are both among the many Amazonian tribes who live along the river. Unlike Asheninka, the Shipibo
language is never referred to as "Ucayali," however.
Here are links to our webpages about the Ucayali tribe and language: