-huan.

Headword: 
-huan.
Principal English Translation: 

possessive plural nominal suffix

James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 217.

Attestations from sources in English: 

Not to be confused with: -huan = with, along with. (See our other entry for that one.)

Also, the plural part is the noun, not necessarily the possessor.
Rebecca Horn's notes from Nahuatl study sessions with James Lockhart in the late 1970s and early 1980s.

See also: 
-huan.