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=Melchor/N=Fernández@de@la@Cueva@y@Enríquez@*@de@Alburquerque@*@de@Cuéllar@*@de@Ledesma@y@de@Huelma
Melchor Fernández de la Cueva y Enríquez * de Alburquerque * de Cuéllar * de Ledesma y de Huelma
alternatively: /cgi-bin/llmult/LANG=germ/P=20001072
Melchor Fernández de la Cueva y Enríquez * de Alburquerque * de Cuéllar * de Ledesma y de Huelma