Oba (goddess)
In Yoruba mythology, Ọba or Obbá is the Orisha of the River Ọba, whose source lies near Igbon, where her worship originates. During the wars of the 19th century, her centers of worship moved to the more secure town Ogbomosho. She is traditionally identified as the first wife of Shango (the third king of the Oyo Empire and the Orisha of thunder and lightning) and to have fallen victim one of her scheming junior co-wives. Either Oya or Oshun tricks her into cutting off her ear and trying to feed it to Shango.
Read more about Oba (goddess): Worship in Ogbomosho, Myths of Ọba's Ear