Roman Kingdom
After Romulus, who created the Senate, there were, according to legend, six more kings: Numa Pompilius, Tullo Ostilio, Anco Marzio,  Tarquinius Priscus, Servius Tullius and Tarquinius Superbus. After Romulus died, the Roman Senate could elect a new king, and after much debate between Romans and Sabines, it agreed to allow the Curiate Assembly to vote for a new king of Rome. It chose Numa Pompilius, who unlike Romulus was against war and thought that the best course for Rome was peace. He is credited with bringing religion into the average Roman everyday life.