conventionDeclaration detailLevel http://ica-atom.org/doc/RS-2#5.4 person Álava, Miguel Ricardo de (1771-1843), Spanish ambassador conventionDeclaration Don Miguel Ricardo de Alava conventionDeclaration Miguel Ricardo de Álava y Esquivel conventionDeclaration 7 July 1770 – 14 July 1843 Letter from Miguel Ricardo de Álava to Jean-Sylvain Van de Weyer