In Latvian - latvietis
There are no other words which would describe Latvian apart from translations in different languages.
Lettish
The name is Latvija.
This surname Luksis is a Latvian surname and is also found in Lithuania as Luksas. This surname Luksis could be another form of Lucas, or it could be of another origin, probably a name for a luxurious person, from "Luksis" in Latvian meaning "luxury".
Latvian
Diegs I guess... Not sure if it changes...
Common name
A latvian person - latvietis(male) and latviete(female)
gabov kiriley
Valda is the feminine variant of the Latvian name Valdis, meaning "ruler".
Bear in latvian is Lācis.
it is actually latvian for y-front underwear
Rīdzinieks (man), Rīdziniece (woman)
Latvian lats was created in 1993.