William Smith,
A Smaller Dictionary of Greek and Roman Antiquities
“ The title Basileus was sometimes applied to an officer who discharged the priestly functions of the more ancient kings, as in Athens. [Archon.] — (2) Roman. Rome was originally governed by kings. All the ancient writers agree in representing the king as elected by the people for life, and as voluntarily entrusted by them with the supreme power in the state. No reference is made to the hereditary principle in the election of the first four kings; and it is not until the fifth king Tarquinius Priscus obtained the sovereignty, that anything is said about the children of the deceased king. ”
