Hi, Andy... you must remember that in my case (living in Buenos Aires, Argentina) my sources are books written in Spanish. One the books I frecuently consult is "Diccionario de Nombres Propios" by mexican author Gutierre Thibón (Fondo de Cultura de México). Now I'm in my office, not at home where I have more material about jewish names. I promise you, I'll send you some material this weekend. Regards.