Castelnuovo (surname)
Castelnuovo is an Italian surname. It is a toponymic surname, derived from the name of a place, likely referring to a "new castle" or "new fortified place." Many towns and villages in Italy bear the name "Castelnuovo," and the surname would have originated from individuals who migrated from one of these places to another.
The surname Castelnuovo is found throughout Italy, with concentrations in various regions depending on the specific Castelnuovo place of origin. Over time, the name may have been subject to slight variations in spelling, depending on regional dialects and transcription practices.