Jupiter agrees to Juno's request in Book 12 that the Trojans' will not keep their name: She said, "Let there be Latium still, and, down the centuries, Alban kings; let there be the Roman breed drawing power from Italian manliness."
Jupiter's response:
"Custom and ritual of sacrifice I shall impose. I shall make all to be Latins of a single speech. From the union you shall see a mixed race of Italian blood arise, exceeding in religious duty all other men and even gods, nor shall any nation celebrate your rites so devoutly as they."
The Romans were to be a people of pietas - duty to the gods before all else.