Proper noun
Ogboni
A fraternal institution indigenous to the Yoruba-speaking polities of Nigeria, Benin and Togo, as well as among the Edo people. It performs a range of political, religious and judicial functions.
Synonym: Osugbo
Besides, if that is what it takes to do what he's doing in Imo State, then Ogboni MUST be the BEST society membership in the world. Source: Internet