He had vowed to build a temple to Castor and Pollux if the Romans gained the victory; and in the beginning of the fight, two glorious youths of god-like stature appeared on horseback at the head of the Roman horse and fought for them.

It was a very hard-fought battle.

Valerius was killed, but so was Titus Tarquin, and the Latin force was entirely broken and routed.

That same evening the two youths rode into the Forum, their horses dripping with sweat and their weapons bloody.

They drew up and washed themselves at a fountain near the temple of Vesta, and as the people crowded round they told of the great victory, and while one man named Domitius doubted of it, since the Lake Regillus was too far off for tidings to have come so fast, one of them laid his hand on the doubter's beard and changed it in a moment from black to copper color, so that he came to be called Domitius Ahenobarbus, or Brazen-beard.