 The name "Mumbai" is derived from "Mumbā" or "Mahā-Ambā"—the name of the patron goddess (kuladevata) Mumbadevi of the native Koli community— and "ā'ī" meaning "mother" in the Marathi language, which is the mother tongue of the Koli people and the official language of Maharashtra.The Koli people originated in Kathiawad and Central Gujarat, and according to some sources they brought their goddess Mumba with them from Kathiawad (Gujarat), where she is still worshipped.However, other sources disagree that Mumbai's name was derived from the goddess Mumba.