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=Carl!@Borromäus@Franz@von@Sales@Vincenz@Ferr.@Anton@Franz@Xaver@Johann@Nepomuk@Johann@Baptist@Majolus/N=v.Harrach@zu@Rohrau@u.@Thannhausen
alternatively: /cgi-bin/llmult/LANG=germ/P=52001511