Glossary of Last Name Meanings and Origins - Indexed reference includes meanings, common spelling variations, and genealogy resources for last names from around the world. - http://genealogy.about.com/library/surnames/bl_meaning.htm
Behind the Name - Searchable database featuring the etymology and history of last names. - http://surnames.behindthename.com/
Last Name Meanings - Find the ethnic origin and meaning of last names including Irish, German, English, French, Italian and Jewish descent. - http://www.last-names.net/