About Hanni Woodbury Hanni Woodbury, Ph.D., is an independent scholar who has been researching the Onondaga language since 1971. Books by Hanni Woodbury A Reference Grammar of the Onondaga Language by (author) Hanni Woodbury, Onondaga Nation Council of Chiefs & Onondaga Language Program Onondaga-English / English-Onondaga Dictionary by (author) Hanni Woodbury