Yeah, the English and Germans exported razors by the jillion, so perhaps the Italians mostly imported them.
Seems obvious that your Fratelli Cella razor was imported from Solingen. I seriously doubt Lorenzo Bianda was anything other than a dealer as his maker's mark would probably not be M/C.
Still, some more Italian-made ones are bound to be out there.
On that M/C mark. I have one and so do you. Each stamped with a dealer's stamp. I wish I knew who actually made them.
Bound to be one out there stamped with the actual maker's name.
I have looked and asked Neil Miller. I also had a member put it out on a French forum. Still no dice.
Razor mysteries! :D