Barcia Trelles, Camilo Keywords: Spain | International law | Doctrines | Legal history | Fernando Vazquez de Menchaca (1512-1569) | Mots clefs: Espagne | Droit international | Doctrines | Histoire du droit | ABSTRACT In his course, Camillo Barcia Trelles intends to study the international ideas of Fernando Vasquez de Menchaca, regarding which writes the author, there is a curious contradiction, in the sense that he was once most famous by his name and most neglected in his substance. After a presentation of the life and work of …