It survived the overthrow of the kings in 509 BC , the fall of the Roman Republic in the 1st century BC , the split of the Roman Empire in 395 AD , the fall of the Western Roman Empire in 476 AD , and barbarian rule of Rome in the 5th , 6th , and 7th centuries .
It survived the kings , the Roman Republic ( 509 BC-27 BC ) , the Roman Empire ( 27 BC-395 AD and the fall of the Western Roman Empire ( 395-476 AD ) .