The Adyumbas are an ethnic group who speak a Myéné* language in the Bantu* linguistic group; they live in the Lake Azingo región in Estuary Province and Moycn-Ogooué Province in Gabon.
Historically, the Adyumbas were a clan of the Mpongwe* people. who were skilled canoemen and made their living off of the Ogooué River. Two centuries ago, they lived on the banks of Nazareth Bay at the mouth of the Ogooué River. but conflict with the Ombéké people drove them toward the west where they live today. Today, most Adyumbas are fishermen, small farmers, or local merchants.
Source: K. David Patterson. The Northern Gabon Coast to 1875. 1975: David E. Gardinier. Historical Dictionary of Gabon. 1994.