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=Jean@IV/N=de@Beauvau-Craon@de@Sarmaises@de@Rochettes@des@Essarts@de@Manonville
Jean IV de Beauvau-Craon de Sarmaises de Rochettes des Essarts de Manonville
alternatively: /cgi-bin/llmult/LANG=germ/P=27000287
Jean IV de Beauvau-Craon de Sarmaises de Rochettes des Essarts de Manonville