Juan Munoz y Canga-Arguelles, Marques de San Agustin (born 1897) (b. 1897) Parents Fernando Munoz y Bernaldo de Quirós, Duque de Riansares Ana Canga-Arguelles y Lopez-Doriga Children Jose Munoz y Acebal, Duque de Riansares Siblings Ana Munoz y Canga-Arguelles, Vizcondesa de Rostrollano Maria Cristina Munoz y Canga-Arguelles Joaquina Munoz y Canga-Arguelles Fernando Munoz y Canga-Arguelles, Duque de Riansares Eladia Munoz y Canga-Arguelles Partners Filomena Acebal y Munoz