Background
Second son of José Roque Mariano de la Plaza Elejalde and Manuela de la Silva Palacios. His older brother, Rafael de la Plaza, was also a politician and acted as governor of Santiago del Estero Province.
Diplomat lawyer politician president
Second son of José Roque Mariano de la Plaza Elejalde and Manuela de la Silva Palacios. His older brother, Rafael de la Plaza, was also a politician and acted as governor of Santiago del Estero Province.
University of Buenos Aires.
He studied law in Buenos Aires and obtained his doctorate in 1868. Was secretary of Dalmacio Vélez Sársfield and collaborated on the writing of the Argentine Civil Code. Was Treasury Minister under Nicolás Avellaneda (1876), later Interventor in Corrientes Province (1878) and Foreign Minister (1882) and Treasury (1883-1885) during the first Julio Argentino Roca administration.
Was elected vicepresident for the National Union presided by Roque Sáenz Peña in 1910.
He assumed the presidency after the death of Sáenz Peña and governed between 1914 and 1916. Died of pneumonia after retiring from politics.