Jean-Jérôme Adam (8 June 1904 – 11 July 1981) was the French Roman Catholic archbishop of Libreville, Gabon, and an accomplished linguist who studied several of the languages of Gabon.
He was born at Wittenheim in Alsace and educated in the seminaries of the Holy Ghost Fathers.
He arrived in Gabon on 29 September 1929, and spent the next 18 years as a missionary in the Haut-Ogooué Province.
During that time he prepared grammars for the Mbédé, Ndumu, and Duma languages.
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