Olukumi people

The Olukwumi people is a subgroup of the Igbo people of the Aniocha North area of the Delta State, Nigeria. The Olukwumi occupy eight communities west of the Niger river, and are together known today as the Odiani Clan in Aniomaland. Historically, the Odianis are the Yoruba clans in the Anioma cultural area. Ukwu Nzu (Eko Efun) town is the historical headquarters of the Olukwumi people and is traditionally headed by the Obi of Ukwu Nzu, Agbogidi The present Obi is H.R.M. Obi Ogoh 1. Olukwumi villages select leaders through the Okpala Obi system, which is the Okpala (gerontocracy) of the Igbos. The Odianis today are known as Igbo people in Delta State, together with the Ezechime who and Idumuje clan . The Anioma people are those from Aniocha (Enuani and Olukwumi), Ndokwa (Ukwuani), Ika, and Oshimili areas of Delta State.
Geography.
The Olukwumi are native to an area just west of the Niger River's right bank. The area is rich in Chalk and Kaolin deposits which is known as "Nzu" in Igbo language and "Efun" in Yoruba, which has been traditionally mined and used by the people of the area for various cultural purposes.
Etymology.
The word "Olukwumi" is said by some to mean "My confidant" or "My friend" in Yoruba.
History.
According to Olukwumi oral tradition, Olukwumi are is a blend of aboriginal Igbos and migrants from the Owo, Akure or the Akoko, depending on the Olukwumi town in question. 
Due to the subsequent blend and proximity of their settlements with Enuani speakers, they today speak both the Olukwumi and Enuani dialect dialects of Igbo language. Prayers and recitals in their native dialect are also being encouraged, while making conscious efforts to speak the language to their children and in their communities as a whole. Of the towns in the Odiani clan, only Ugbodu and Ukwu-Nzu are bilingual; the rest are solely Enuani-speaking.
According to a report in the "Sunday Tribune" of October 24, 2010, they have also started to organize recitation and oratory quizzes and competitions in Olukwumi to preserve the dialect. Linguists are also documenting the language. For 40 years, Chief G B Nkemnacho, a lawyer of Olukwumi origin has documented his people's history as told by its elders as life experiences and oral tradition.