The Aro people or the Aros are an Igbo subgroup consisting of an aggregation of people who have subscribed to distinct culture, beliefs and tradition, the Aro culture, and believers in one supreme deity, Ebin'Ukpabi, the Almighty God, whose children they are. Their ancestral home is Arochukwu. In the eighteenth century, there lived an Aro chieftain whose name was Izuogu Obunukpo Akuma Nnachi. He was an energetic and astute business man who traversed several parts of Igboland and eventually set up the largest Aro settlement outside the homeland. When he died, his first son took over as the head of his clan and succession proceeded smoothly thereafter for about one and a half centuries, until an incent decision taken by the clan in early twentieth century out of exigency, aimed at forestalling a leadership conundrum, metamorphosed into a seed of challenge to the legitimate headship of the House of Mazi Izuogu. This book aims to put the matter in its proper historic perspective.