In inscription ET Vs 1.60, we find a name written out as Ramnunas. This is the Etruscan genitive of Ramnuna used as a male praenomen in this inscription. This is probably a reduction of earlier *Ramniiuna composed of *Ramniiu and the pertinentive suffix -na commonly used among other things to form family names.
At that, we can turn our attention to the Roman nomen Ramnius, likely the ultimate source of the Etruscan name. Ramnius may mean 'of the Ramnes' and the Ramnes were an ancient Italic tribe said to have been instrumental in the initial founding of Rome.