Martín Castro (DPhil. in Modern History, University of Oxford, 2004) is a researcher at CONICET (Universidad de Buenos Aires, Argentina) and professor at Universidad Nacional de Tres de Febrero (UNTREF- Argentina). He has been a visiting researcher at the Latin American Centre (University of Oxford, 2011) and at Universidad del Rosario (Bogotá, Colombia), and a visiting professor at Universidad Torcuato Di Tella (Buenos Aires, Argentina). His research has focused on the history of political Catholicism in Argentina and of the relationship between party politics and parliament in early twentieth century Argentina. He is author of El ocaso de la república oligárquica: Poder, política y reforma electoral 1898-1912 (Buenos Aires, Edhasa, 2012) and co-editor of Del Centenario al peronismo. Dimensiones de la vida política argentina (Buenos Aires, Imago Mundi, 2010). Among his recent publications are “Los católicos argentinos ante la cuestión electoral y la democracia entre el otoño del orden conservador y los inicios de la ‘república verdadera’, 1900-1919”, Nuevo Mundo Mundos Nuevos, 2016 and “Sites of power, instruments of public intervention: the Palace of Congress and the construction of federal power in Argentina, 1880-1916”, (Parliaments, Estates and Representation, 2017). He is currently working on a biography of Julio A. Roca and editing a collection of articles on Latin American political Catholicism in the first half of the twentieth century.