[1] For Herophila as the name of the Erythraean Sibyl see again under chi 484, and cf. Hesychius eta829. Varro listed a total of ten Sibyls, and the story reported by the Suda about the Sibylline books is also related by some sources to the Cumaean Sibyl. The two Sibyls are considered identical by Martianus Capella, de Nuptiis [a.k.a. Philologia] 2.8.7.
For the Sibyls see also sigma 361; also beta 560, iota 320, pi 2506, sigma 354, sigma 355, sigma 356, sigma 357, sigma 358, sigma 359, sigma 360.
[2] See lambda 491, sigma 362. Pausanias 10.12.2 also attributes to the Sibyl the authorship of a hymn to Apollo.
[3] Not Tarquinius Superbus (tau 125), the last king of Rome before the foundation of the Republic in 510 BCE, but his predecessor -- possibly grandfather -- Tarquinius Priscus. For another chronological pointer to the sixth century see Nicolaus of Damascus FGrH 90 F67, where Herophila is summoned from Ephesus (sic) by Cyrus of Persia.
[4] cf. chi 484.
[5] For this account cf. Dionysius of Halicarnassus, Roman Antiquities 4.62 and Aulius Gellius, Attic Nights 1.19, who refer it to the Cumaean Sybil. The book the king agreed to buy, the third of the entire collection, perished in the fire destroying the Capitolium in the time of Sulla (see Pliny the Elder, Natural History 13.27); afterwards, the Roman government would seek for another copy, but to no avail.