Ilesa (Yoruba: Iléṣà) is a historic city located in Osun State, southwest Nigeria; it is also the name of a historic kingdom (also known as Ijesha) centred on that town.[1][2][3] The state is ruled by a monarch bearing the title of the Owa Obokun Adimula of Ijesaland.[4] The state of Ilesa consists of Ilesa itself and a number of smaller surrounding cities.[5][6] The Ijesa, a term also denoting the people of the state of Ilesa, are part of the present Osun State of Nigeria.[7] Some of the popular towns of the Ijesa are Odo-Ijesa, Ilaje, Igbogi, Ise-Ijesa, Ibokun, Erin Oke, Erin Odo, Ijeda-Ijesa, Ipetu Jesa, Ijebu-Jesa, Esa-Oke,Esa Odo, Ipole Ijesa, Ifewara Ijesa, Ipo Arakeji, Iloko Ijesa, Iwara Ijesa, Iperindo Ijesa, Erinmo Ijesa, Iwaraja Ijesa, Oke-Ana Ijesa, Idominasi, Ilase Ijesa, Igangan ijesa, Imo Ijesa, Alakowe Ijesa, Osu Ijesa, Eti Oni, Itaore, Itagunmodi, Iyinta, Itaapa, Epe Ijesa, Omo Ijesa, Eti-oni, Ibokun, Inila, Ijinla, Iloba Ijesa, Imogbara Ijesa, Eseun Ijesa, Iloo, Owena Ijesa, Ido Ijesa, Ido Oko, Ibala Ijesa, Ere Ijesa, Ilahun, Ibodi, Ijaaregbe, Ikinyinwa, Idominasi, Ilowa, and Ibodi.[8]