[GAIUS libro primo institutionum. ] §1.7.28.prLiberum arbitrium est ei, qui filium et ex eo nepotem in potestate habebit, filium quidem potestate demittere, nepotem uero in potestate retinere: uel ex diuerso filium quidem in potestate retinere, nepotem uero manumittere: uel omnes sui iuris efficere.
[GAIUS, Institutes, book 1.] A person who will have in his power a son and a grandson born of him has the free choice either to release the son from his power and retain the grandson in his power; or, conversely, to retain the son in his power and manumit the grandson; or to make them all independent.
eadem et de pronepote dicta esse intellegemus.
We shall understand that the same things are also said concerning a great-grandson.