Monneba, also spelled Moneba and other ways, (fl. c. 1630) was a local Duala leader on the Cameroon coast in the 1630s. Dutch sources from the 1660s say that Monneba ran a trading post on the Cameroons River (the Wouri) at the present location of Douala. His people dealt primarily in ivory, with some slaves. Modern scholars equate Monneba with a Duala ruler named Mulobe a Ewale or Mulabe a Ewale. Assuming this is true, he is the earliest Duala leader of whom we have corroboration in written sources. It is quite possible that Monneba/Mulobe was the ruler who set into motion the transformation of the Duala into a trading people and the most influential ethnic group in early Cameroonian history.
Dutch sources from the early 17th century provide some insight into nascent European trade on the Cameroons River (Wouri) at the present site of Douala. Arnout Leers, probably drawing from writings by Samuel Blommaert in the 1630s, is the first writer to mention Monneba:
Euro-Cameroon trade was in its infancy, and these customs duties indicate that Monneba's trading post was of lesser import than that of a leader called Samson (probably an Ibibio) on the Rio del Rey farther north. Rulers farther south in Gaboon (Gabon) received even more custom.
Dutch maps from the 1650s clearly label Monneba's Village (Monna Baes dorp [sic]), located on the site of Belltown in Douala. The maps also place Monneba's name on the Dibamba River, which is called Monneba's Creek or Channel (Monnebasa Gat).
O. Dapper writing in 1668 (also drawing from Blommaert) explains that by that date Samson had been driven out by "those of Ambo" (Ambas Bay) and Monneba had become the lead trader in the region: