The state of Ketu is located in present-day Republic of Benin. In the Yoruba language, the word oba means king or ruler. It is also common for the rulers of the various Yoruba domains to have their own special titles. In Ketu the Oba is referred to as the Aleketu of Ketu References http://www.rulers.org/benitrad.html http://www.citrus-moon.com See also Benin Yoruba states List of rulers of the Yoruba state of Dassa List of rulers of the Yoruba state of Icha List of rulers of the Yoruba state of Oyo List of rulers of the Yoruba state of Sabe Lists of office-holders Yoruba history Benin history-related lists Government of Benin Lists of African rulers