Pronunciation of 'papa' in PNW English

[David D. Robertson]

http://us.english.uga.edu/lapnw/maps/item_52_8.html

On the map found at this link, I see at least one respondent used 'papa'
(stress on last syllable) as their word for 'father.'  Any of several
explanations might lie behind this, for example that the person came from
a family of immigrants whose ancetral language contained such a word.
Another interesting possibility is that the person spoke Chinook Jargon.

--Dave