Background
Born in Bilbao, son of Ernesto de Zulueta y Samá, of the Marquesses of Álava Viscounts of Casa Blanca (Louisiana Granja de San Ildefonso, 10 July 1855 - Bilbao, 2 December 1919) and wife and cousin (m Algorta, 5 September 1881) María de Isasi y Murgoitio, of the Marquesses of Barambio (Bilbao, 10 September 1854 - 1 November 1934).