Dear Bonet family members!
I finally found out after many years researching. You'll find an excerpt published in the next June-July 2003 magazine "Sharsheret haDorot", the journal of the Israel Genealogical Society.
A book with full details is following soon! Maybe this or next year in Avotaynu (Publisher).
I can tell you in advance: Bonet established first in Europe in the South of France in the first centuries C.E. but the full story is much more fascinating than that!
Regards,
Andy
Miembro Colaborador de la Real Academia Matritense de Genealogía y Heráldica (Madrid) Spain