The spelling could be englicized.
The real italian spelling should be:
COCHIS (a latinized form of Coco?)
DE CRISTOFORO (son of Christopher)
CASSATA (sicilian surname)
DEL MONICO (from munk)
DE ANTONIS (son of Anthony).
To see the geographical distribution in Italy see the Site:
www.gens.labo.net (Gens Italia)