Sentence:  Biya's volte-face became apparent in July 1990 when he, as president of the ruling Cameroon People's Democratic Movement (CPDM) appointed Ganyonga and the <WSD>fons</WSD> of Mankon and Bafut into key positions of the party ... 
Meaning of the word marked with <WSD> tags:  A chieftain or king of a region of Cameroon.