Amarachi Agu 
The origin of the Abiriba people is not as speculative as the origin of other Igbos of southeastern Nigeria. Historical evidence supports the fact that Abiriba people have common ancestry with the Bahumono, Yakor, Ekoi tribes of cross river basin and the people of Arochukwu.[citation needed] At Ekoi, constant disputes between the seven families under Ukpaghiri prompted the clan to move to Ena and finally to Akpa.[2] However, the Abiriba people found it difficult to settle in Akpa due to several issues with neighbours. Nevertheless, the death of Ukpaghiri led to the movement of Mbiriba and his group to Usukpam. Despite staying there for many years, they were still never at peace with the neighbours.[3]
Abiriba is made up of three main villages: Ameke, Amogudu, and Agboji. It operates a monarchical system.[4] It operates on a tripodal system where the Eze of each of the three communities come together to form the Enachioken-in-council with the Eze Ameke as Enachioken on the basis of first among equals.[citation needed] The Paramount Ruler of Abiriba kingdom and the Enachoken of Abiriba, Kalu Kalu Ogbu.[5]
Succession to the throne of Enachioken[edit]
Due to the tradition of the Nde Abiriba, the rule is that the descendants of the founder of Abiriba would rule over the kingdom. This is due to the fact that the succession to the throne of the Enachioken is by hereditary which is made up of the three royal compounds, that is, the ruling houses in the Abiriba Kingdom.