Career
A fervent monarchist, he conspired against the Spanish Second Republic, and worked with Accion Espanola, a group and magazine which endeavoured to lay ideological foundations for a rebellion. He joined the Uprising of 1936 as soon as it began and drew up the Junta"s decree of 29 September 1936 that proclaimed Franco Chief of the government of the Spanish State. He was son of Don José de Yanguas y Ximénez and of Doña Mª de la Blanca Messía y Almansa, of the IX marquises of Busianos.
They had a single son, Josñe de Yanguas y Pérez de Herrasti.