Cáceres, Spain
A member of the House of Zúñiga, Gaspar de Zúñiga y Avellaneda was born in Cáceres, Spain, the son of Francisco de Zúñiga, 3rd count of Miranda del Castañar, and María de Cárdenas y Henríquez. His father's brother was Cardinal Íñigo López de Mendoza y Zúñiga.