Nabongo Mumia Shiundu (Nabongo Mumia) was the 17th Nabongo and became king (paramount chief) of an expansive region of Kenya at the beginning of British imposition of colonial rule in East Africa. Nabongo Mumia is regarded as the most powerful and well known ruler of the Wanga Kingdom, coming to power during the East Africa Protectorate in the 20th century. Nabongo Mumia Shiundu's rule was heavily influenced by an alliance with Arab/Swahili slave traders and conflict with the neighbouring Luo peoples which escalated after the completion of the Uganda Railway by British colonisers. Arab/Swahili slave traders formed an aliance with Wanga to raid neighboring tribes to be sold into the Atlantic slave trade including the Luo and Bukusu Constant conflict led Nabongo Mumia to collaborate with the British who made him a paramount chief of an expansive region of East Africa with various chiefs reporting to him such as Chief Chabasinga who managed Jinja, Uganda, Lenan Tenai who managed the Maasai and chief Odera Akang'o who managed Luo Nyanza.
