Editing Northern Kalapuya language (section)

{{short description|Extinct Native American language formerly spoken in Oregon}}
{{Infobox language
| name             = Tualatin-Yamhill
| altname          = Northern Kalapuya
| states           = [[United States]]
| region           = Northwest [[Oregon]]
| extinct          = 1937, with the death of Louis Kenoyer
| familycolor      = penutian
| fam1             = [[Kalapuyan languages|Kalapuyan]]
| iso3             = nrt
| glotto           = tual1242
| glottorefname    = Tualatin-Yamhill
| linglist         = nrt
| dia1             = Tualatin
| dia2             = Yamhill
}}
'''Northern Kalapuyan''' is an extinct [[Kalapuyan]] language indigenous to northwestern [[Oregon]] in the [[United States]]. It was spoken by [[Kalapuya people|Kalapuya]] groups in the northern [[Willamette Valley]] southwest of present-day [[Portland, Oregon|Portland]].

Three distinct [[dialect]]s of the language have been identified. The Tualatin dialect (Tfalati, Atfalati) was spoken along the [[Tualatin River]]. The Yamhill (Yamhala) dialect was spoken along the [[Yamhill River]]. The language is closely related to [[Central Kalapuya language|Central Kalapuya]], spoken by related groups in the central and southern Willamette Valley.

The [[terminal speaker]] of Northern Kalapuya was Louis Kenoyer who died in 1937.<ref>{{cite book|last1=Jacobs|first1=Melville|title=Kalapuya Texts|date=1945|publisher=University of Washington|series=University of Washington Publications in Anthropology|volume=11|location=Seattle}}</ref>