Olomu and Development of Urhoboland and Western Niger Delta offers fresh perspectives on the origin of the Urhobo people as well as the pre-historic development of their lands in Nigeria's Western Niger Delta. The book posits that the uninhabited rain forests of the central Western Niger Delta were conquered and developed by Edoid-speaking Urhobo migrants who took advantage of Iron Age implements that emerged from the transition from Late Stone Age to Early Iron Age some two thousand years ago in the West African region. The book postulates that the progenitors of the Urhobo people arrived in the Western Niger Delta through the waterways of Niger River and its tributaries and that they first settled on the western banks of Ase River and Patani creek. Their descendants moved northwards in cohorts of Kinsmen that conquered and settled portions of the rain forests, resulting in a cascading formation of twenty-two clans with distinct subcultures. Olomu stands out among these due to its central location in Western Niger Delta and has ample linkages with several sub-cultures of Urhoboland, neighbouring Isoko, and Western Ijaw. In Ancient times, Olomu was exceptionally prolific in serving as the origin of four major sub-cultures in northern Urhobo and northern Isoko. Moreover during the early decades of British colonial rule in the 20th century, Olomu played a significant role in the development of Urhoboland. For these reasons, Olomu has been used as a handle for examining the patterns of development of Urhoboland and Western Niger Delta they are presented in this monograph.