Original source: Platt, Lyman D. Hispanic Names and Family History. Baltimore, Maryland: Genealogical Publishing Company, 1996. Ancestry.com has searchable indexes; database results and some digitized images are available with a fee-based subscription. Free articles and helpful research materials.
The Knowles Collection is group of records on the FamilySearch Community Trees Website. This database originally contained the records of a small section of the Jewish people of the British Isles. That set included less than 10,000 people. What was once a single database, has now grown to be six individual databases that now contain the genealogical records of almost 1.2 million Jewish people: The Jews of the British Isles; The Jews of North America; The Jews of Europe; The Jews of South America and the Caribbean; The Jews of Africa, The Orient and the Middle East; The Jews of the South Pacific. Read more about the collection here: FamilySearch Blog - Popular Online Jewish Genealogy Collection Surpasses One Million Entries