Apollo and The Sibyls

Page 143 in The Marriage of Cadmus and Harmony begins talking about Herophile, who is a Sibyl of Delphi. Sibyls were granted the power of prophesy by Apollo, son of Zeus and Leto.  Herophile was also born from Zeus, although her mother was Lamia not Leto, which is why she claims to be the twin sister of Apollo. She would sometime refer to herself as Artemis, who actually is the twin sister of Apollo.

Artemis is the goddess who caught Actaeon looking at her naked body as she was bathing and turned him into a stag. He was then devoured by the hounds he had brought with him, as they only saw another stag to be eaten.

As the Sibyl of Delphi, Herophile prophesied the coming of Helen; which in turn caused the Trojan War, the destruction of Asia and Europe, etc. 

The other Sibyl mentioned, Demophile, is also known as the Sibyl of Cumae. She was granted the power of prophesy from Apollo, just as Herophile was, but she was given another gift. Apollo allowed her to live as many years as grains of sand she could hold in her hands. Apollo eventually tried to seduce her and she rejected him, so Apollo let her youth slip away and she became so old and disgusting that she began begging to die.

The story of these two Sibyls give just another of the infinite insights into the many sides of Apollo, one of the main gods throughout The Marriage of Cadmus and Harmony.