Italians in Mexico

Does anyone know of any books, websites, passenger ship records regarding Italians immigrating to Mexico say during the late 1500's to early 1800's? I've checked out the Archivos Espanoles En Red website: http://aer.mcu.es/sgae/index_aer.jsp to see if I could find my Italian ancestors who settled in Mexico, via Spain, but have come up with a big zero. I have a copy of the book " La Emigracion Castellana y Leonesa al Nuevo Mundo 1517-1700" by Maria del Carmen Martinez Martinez and nothing in there as well.

The surnames involved are Lomellin, Lomelli (Carlos Lomellini about 1600, children and grandchildren in Nochistlan, Zacatecas) and Durazzo around Hermosillo, San Miguel de Horcasitas, Sonora in the late 1700's to early 1800's.

Thanks
Rose
Fresno, CA