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=germ/F=Baudoin@Leopold@Philippe@Marie@Charles@Antoine@Joseph@Louis/N=de@Belgique
Baudoin Leopold Philippe Marie Charles Antoine Joseph Louis de Belgique
alternatively: /cgi-bin/llmult/LANG=germ/P=23001140
Baudoin Leopold Philippe Marie Charles Antoine Joseph Louis de Belgique