Numa Pompilius

Numa Pompilius, a Sabine, took the throne around 715 BC after Romulus's death and a year without a king. Where his predecessor had been a warrior-founder, Numa turned to institution-building: he restructured the Roman calendar, established the Vestal Virgins to tend the sacred flame, formalized the cults of Mars and Jupiter, and created the office of pontifex maximus to oversee it all. His forty-three-year reign ran until roughly 672 BC. The religious architecture he erected—priesthoods, festivals, sacred law—became the operating system of Roman public life for centuries after the kings were g…