The Kalapuyan languages are considered by most linguists to be part of the Penutian family
of languages, possibly related most closely to Takelma.
There were once three distinct Kalapuyan languages, Northern Kalapuya (Atfalati or Tualatin), Central Kalapuya (Santiam or Lakmayut), and
Southern Kalapuya (Yoncalla). These three languages were closely related but could not be easily understood by speakers of one of the others,
like Spanish, French and Italian. Unfortunately the distinction is moot now, as none of the Kalapuyan languages are still spoken.
The Kalapuya tribes were devastated by smallpox, and the survivors were relocated onto the Siletz and Grande Ronde reservations
in the 1800's along with many other Oregon tribes.
Though their descendants still live there today, there are no more native speakers of any of the Grande Ronde languages.