ヨルバ語
Alaafin, or "The Owner of the Palace" in the Yoruba language, is the title of the emperor of the medieval Oyo empire and present-day Oyo town of West Africa. He ruled the old Oyo Empire which extended from the present day Benin republic to Nigeria originating from states in the South East and West to the North.The people under him are called Yoruba and spoke Yoruba Language.