Yangongo was born in
Brazzaville on 31 December 1946. His father, Norbert Yangongo (1908–1982), was a policeman, while his mother, Agathe Sawala Mounguiakoua, worked as a seamstress. He enrolled at École Saint-Vincent in 1954 and then at Petite Ecole de Foie in 1955. Subsequently, he studied at Collège Charminade from 1961 to 1963 and later at Military Preparatory College in Brazzaville. == Career ==