Bibliography
For a more extensive study of the Jewish onomastics, here are a few suggestions.
For Ashkenazi names, one can consult several works of Alexandre BEIDER on Jewish names in Poland and Russia (check on the catalog of our library with the author Beider). Pierre-André MEYER's book mentioned earlier gives many details on the names at Metz.
For North African names, it is very beneficial to read Maurice EISENBETH's and Jacques TAÏEB's books published by the CGJ (see section Publications)as well as La saga des familles, les juifs du Maroc et leurs noms, by Joseph TOLEDANO.
On the Web, it is possible to search the origin of a name in the database of Beth Hatefutsoh, for a fee. It is easy to find all the variants of a Jewish name (mainly Ashkenazi) and the corresponding references on the CJSI of Avotaynu. As for the Sephardic names, in a larger sense of the term, i.e. for North Africa and the Ottoman Empire, the Website of Fondation Sepharade yields quite a choice of lists. On sephardim.com, you can find a number of Sephardic names and the corresponding references. In JewishGen, Jeff Malka has also produced his own list of Sephardic names. Let us also mention the detailed study that Lionel Lévy devoted to the Jewish names in Tunisia.