The nomenHoratius is said to have been derived from the hero Horatus, to whom an oak wood was dedicated. The gens was certainly of Latin origin, although there was some uncertainty as to when they arrived at Rome. A legend relates that in the reign of Tullus Hostilius, the fate of the ancient city of Alba Longa was decided by combat between three brothers from that city and three from Rome. The historian Livy states that most sources assigned the Horatii to Rome, and their opponents, the Curiatii, to Alba Longa. The victory of the Horatii was a pretext for the destruction of Alba Longa, and the transfer of its noble families to Rome.
The Horatii of the Republic bore the surnames Barbatus, Cocles, and Pulvillus. Of these, Barbatus and Pulvillus were family names, while Cocles appears to have been a personalcognomen, given to the hero of the Sublician bridge. Plutarchus supposes that it was derived from the Greek cyclops, because he had lost an eye, or because the shape of his face made it appear as if he had but one eye. Cocles is said to have been the nephew of Marcus Horatius Pulvillus, and if he left any issue, they do not seem to have carried on his surname. Other surnames appearing amongst the Horatii in later times may have been adopted by freedmen of the gens; the poet Quintus Horatius Flaccus was the son of a libertinus, and the cognomen Flaccus is not otherwise found amongst the Horatii.
Members
Publius Horatius, father of the Horatii who fought against the Curiatii, absolved his son of guilt in the death of his sister. In some versions of the story, his praenomen is Marcus.
Publius Horatius, one of the Horatii, three brothers who fought against the three Curiatii in the reign of Tullus Hostilius; and the sole survivor of the combat.
Horatia, sister of the Horatii, was betrothed to one of the Curiatii, and because of her display of grief was slain by her victorious brother. An ancient tomb near the Porta Capena was said to have been hers.
Publius Horatius Cocles, one of the heroes of the Republic, defended the Sublician bridge against the army of Lars Porsena, circa 508 BC.
Marcus Horatius Pulvillus, tribunus militum consulari potestate in 378 BC.
Horatii Barbati
Marcus Horatius M. f. L. n. Barbatus, with Lucius Valerius Potitus, helped to abolish the decemvirate in 449 BC; the two elected consuls for the same year; Horatius triumphed over the Sabines.
Lucius Horatius M. f. M. n. Barbatus, tribunus militum consulari potestate in 425 BC.