Marquesses of Casa Arnao Marqueses de Casa Arnao Created by Leo XIII, pope Decree date 18-03-1895 First holder Guillermo González-Arnao y Longuebean, 1st papal marquis of Casa Arnao * 1849 Records #4 Holders Family filter On/Off 1 Guillermo González-Arnao y Longuebean, 1st papal marquis of Casa Arnao * 1849 2 Jacobo González-Arnao y Amar de la Torre, 2nd marquess of Casa Arnao 3 Guillermo González-Arnao y García-Rendueles, 3rd marquess of Casa Arnao 4 Jacobo González-Arnao y Campos, 4th marquess of Casa Arnao Corrections and Updates To suggest a correction or an update. Click Here