Short answers, pulled from the story.
A relief from a pedestal dating to the reign of Trajan between AD 98 and 117 shows Romulus and Remus alongside Father Tiber. This artifact anchors our understanding of how Roman mythology drew from Italic peoples while sharing mythemes with Proto-Indo-European traditions.
Numa Pompilius served as second king who consorted with nymph Egeria to establish legal institutions. Servius Tullius sixth king had mysterious origins mythologized as lover of goddess Fortuna. The Tarpeian Rock explains why traitors faced execution there while Lucretia's self-sacrifice prompted overthrow of monarchy.
Tarquin the Proud purchased these volumes in late 6th century BC from Cumaean Sibyl according to legend. Prophecies about world history appeared fortuitously at critical junctures discovered suddenly in nebulous Sibylline books.
Earliest pantheon included Janus Vesta and so-called Archaic Triad of Jupiter Mars and Quirinus whose three patrician flamens held highest order. Saturn fathered Jupiter Ceres Pluto Neptune Juno and Vesta according to tradition.
Fourth Style artwork 60, 79 AD depicts punishment Ixion with Mercury holding caduceus Jupiter's milk forming Milky Way according to myth. These visual representations complement literary accounts preserving narratives that might otherwise remain obscure.