Umunze is the headquarters of Orumba south local government area in Anambra state of Nigeria.

Nze Izo Ezema was a farmer and hunter from ohafia near Arochukwu in the present day Abia State.

Ijendu the first wife born one child; Dara (1st son), who is the father and founder of Eziagu, a neighboring town, after a family problem.

War separated the two wives after the death of Nze that made Dara (the first son of Nze) to demand absolute control of the empire but war was waged by the combined forces of his half brothers and they forced him to move out of the empire and enter into Agu which is called IKPA according to Umunze language.

Dara blessed with many children which formed the origin of Eziagu, he settled in the western part of the area.

All the villages have unique features: These 7 sons settled at different locations which today formed a town called Umunze.

He organized Isuokpu, Umunze and Ihite people and neighbours to form a powerful militia group that restricted the advance of the Aros from Okigwe area.