In the fifth year of the reign of Tatius, some of his friends and kinsmen, meeting ambassadors coming from Laurentum to Rome, attempted on the road to take away their money by force, and, upon their resistance, killed them. So great a villainy having been committed Romulus thought the malefactors ought at once to be punished, but Tatius shuffled off and deferred the execution of it;and this one thing was the beginning of open quarrel betwixt them;in all other respects they were very careful of their conduct, and administered affairs together with great unanimity. The relations of the slain, being debarred of lawful satisfaction by reason of Tatius, fell upon him as he was sacrificing with Romulus at Lavinium and slew him; but escorted Romulus home, commending and extolling him for a just prince. Romulus took the body of Tatius, and buried it very splendidly in the Aventine Mount, near the place called Armilustrium, but altogether neglected revenging his murder. Some authors write, that the city of Laurentum, fearing the consequences, delivered up the murderers of Tatius; but Romulus dismissed them, saying one murder was requited with another. This gave occasion of talk and jealousy, as if he were well pleased at the removal of his co-partner in the government. Nothing of these things, however, raised any sort of feud or disturbance among the Sabines; but some out of love to him, others out of fear of his power, some again reverencing him as a god, they all continued living peacefully in admiration and awe of him; many foreign nations, too, showed respect to Romulus;the Ancient Latins sent and entered into league and confederacy with him. Fidenae he took, a neighbouring city to Rome, by a party of horse, as some say, whom he sent before with commands to cut down the hinges of the gates, himself afterwards unexpectedly coming up.
Others say, they having first made the invasion, plundering and ravaging the country and suburbs, Romulus lay in ambush for them, and having killed many of their men, took the city; but, nevertheless, did not raze or demolish it, but made it a Roman colony, and sent thither, on the Ides of April, two thousand five hundred inhabitants.
Soon after a plague broke out, causing sudden death without any previous sickness; it infected also the corn with unfruitfulness, and cattle with barrenness; there rained blood, too, in the city; so that, to their actual sufferings, fear of the wrath of the gods was added. But when the same mischiefs fell upon Laurentum, then everybody judged it was divine vengeance that fell upon both cities, for the neglect of executing justice upon the murder of Tatius and the ambassadors. But the murderers or, both sides being delivered up and punished, the pestilence visibly abated; and Romulus purified the cities with lustrations, which, they say, even now, are performed at the wood called Ferentina. But before the plague ceased, the Camertines invaded the Romans and overran the country, thinking them, by reason of the distemper, unable to resist; but Romulus at once made head against them, and gained the victory, with the slaughter of six thousand men, then took their city, and brought half of those be found there to Rome, sending from Rome to Camerium double the number he left there. This was done on the first of August.
So many citizens had he to spare, in sixteen years' time from his first founding Rome. Among other spoils he took a brazen four-horse chariot from Camerium, which he placed in the temple of Vulcan, setting on it his own statue, with a figure of victory crowning him.
The Roman cause thus daily gathering strength, their weaker neighbours shrunk away, and were thankful to be left untouched; but the stronger, out of fear or envy, thought they ought not to give way to Romulus but to curb and put a stop to his growing greatness.