 Since Rome's records were destroyed in 390 BC when the city was sacked, it is impossible to know for certain how many kings actually ruled the city, or if any of the deeds attributed to the individual kings, by later writers, are accurate.Titus Tatius, King of the Sabines, was also joint king of Rome with Romulus for five years, until his death.However he is not traditionally counted among the seven kings of Rome.