Angakuei
The Angakuei community belong to the people (Angakueth- adjective) are members of the clan from Baidit Payam, Jonglei, South Sudan. The word Angakuei originates from the word Kuei, which means eagle. Abel Alier, the first South Sudanese to become the first vice President of The Sudan and the first president of the High Executive Council of Southern Sudan, is from the Angakuei clan. The name Alier originates from Lirpiou (god of the peaceful heart) a deity that was worshipped by Angakueth (majorly descendants of Kut Ajak Jooh) and their brothers, Gwallɛi (descendants of Rith Ajak Jooh)  who are currently in Kolnyang Payam of Bor County. Angakuei is arguably the largest of all the tribal groups in Dinka Bor, and is divided into about 7 subsections namely: Leek Ajak, Kwai Ajak ( H.E Abel Alier is from this subsection), Deng Ajak (commonly known as Nyang Deng Ajak), Hol (also known Kuot Kut), Lith, Dongduor, Pen, and Akuak (the riverine section of Angakuei). The first four subsections of Angakuei (Tong,Leek, Kwai and Deng) are named after the sons of Ajak Thiong and Nyiel-Aguet Angoh, with Tong being the eldest of the four, Leek being the second, Kwai being the third and Deng as the last 
born. This order may confuse some people because others believe that Tong isn't Ajak's biologically son despite being the first born. It's believed that Nyiel-Aguet was already pregnant before she wasn't married to Ajak Thiong

See also
Culture of South Sudan
History of South Sudan
National Archives of South Sudan

References

Clans
Ethnic groups in South Sudan