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=William@I./N=de@Warenne@*@de@Mortemer@and@Bellencombre@*@of@Surrey
William I. de Warenne * de Mortemer and Bellencombre * of Surrey
alternatively: /cgi-bin/llmult/LANG=germ/P=4007679
William I. de Warenne * de Mortemer and Bellencombre * of Surrey