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@Leopold@Casimir/N=v.Fürstenwärther@gen.@v.Kellenbach
Carl Leopold Casimir v.Fürstenwärther gen. v.Kellenbach
alternatively: /cgi-bin/llmult/LANG=germ/P=25001694