High Quality Content by WIKIPEDIA articles! Ofelia Zepeda (born in Stanfield, Arizona, 1952) is a Tohono O`odham poet and intellectual. Zepeda is a professor of linguistics at the University of Arizona and is well known for her efforts in the preservation of her native language and promotion literacy in it. She is also known for her work as a consultant and advocate on behalf of a number of American indigenous languages. Her book A Papago Grammar is the standard textbook used to teach the Tohono O`odham language. She was a student of MIT linguistics professor Ken Hale.