The Book is about Yoruba women who ruled as Kings centuries ago. The aim is to celebrate Women in monarchy and leadership and to recognize them for the efforts they played in building the community and to encourage more women to take up leadership roles. In many areas of the Yoruba society, women are given a certain amount or range of power and authority to carry out certain leadership duties in areas such as trading, commerce, spirituality and even in royal affairs as found in women in positions such as Iyalode, lya Oba, Olori and these women through their actions counsel and advice played vital rules in different spheres of the Yoruba scenery. These roles show the respect accorded to women in the Yoruba society. Invariably there have been some women who have gone above and beyond these stipulated positions to become venerated women in history and have became kings in their respective Kingdoms, female kings and what we call Oba Obinrin.