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=Alvaro/N=de@Benavides@Bazán@y@Pimentel@*@de@Santa@Cruz@de@Mudela,@del@Viso@y@de@Vayona
Alvaro de Benavides Bazán y Pimentel * de Santa Cruz de Mudela, del Viso y de Vayona
alternatively: /cgi-bin/llmult/LANG=germ/P=20015900
Alvaro de Benavides Bazán y Pimentel * de Santa Cruz de Mudela, del Viso y de Vayona