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=fran/F=Ferdinand!@Albert@Ignaz@Joseph@Johann@Nepomuk@Franz@Xaver@Cajetan@Aloys/N=v.Gumppenberg
Ferdinand! Albert Ignaz Joseph Johann Nepomuk Franz Xaver Cajetan Aloys v.Gumppenberg
alternatively: /cgi-bin/llmult/LANG=germ/P=25040769
Ferdinand! Albert Ignaz Joseph Johann Nepomuk Franz Xaver Cajetan Aloys v.Gumppenberg