Note that the index numbers are only technical numbers which have no persistence. After a new system generation is done, all of them are invalid. To generate a persistent link, use the name.Use the URL:
http://ww-person.com/cgi-bin/l3/LANG=engl/F=Francesco@d'Assisi@Maria@Ferdinando@Eudo/N=de@Borbone-Due@Sicilie
Francesco d'Assisi Maria Ferdinando Eudo de Borbone-Due Sicilie
alternatively: /cgi-bin/llmult/LANG=germ/P=5006177
Francesco d'Assisi Maria Ferdinando Eudo de Borbone-Due Sicilie