Manto
1. A daughter of the Theban soothsayer Teiresias. She herself was a prophetess, first of the Ismenian Apollo at Thebes, where monuments of her existed (Pausanias ix. 10. § 3), and subsequently of the Delphian and Clarian Apollo. After the taking of Thebes by the Epigoni, she, with other captives, was dedicated to Apollo at Delphi. The god sent the captives to Asia, where they founded the sanctuary of Apollo not far from the place where afterwards the town of Colophon was built.
Rhacius, a Cretan, who had settled there before, married Manto, and became by her the father of Mopsus. (Apollodorus III ; Pausanias vii. 3. § 1)
According to Euripides, she had previously become the mother of Amphilochus and Tisiphone, by Alcmaeon, the leader of the Epigoni. (Apollodorus III) Being a prophetess of Apollo, she is also called Daphne, i. e. the laurel virgin. (Diodorus iv)
2. A daughter of the soothsayer Polyeidus (Polyidus), and sister of Astycrateia. The tombs of these two sisters were shown at Megara, near the entrance of the sanctuary of Dionysus. (Pausanias i. 43. § 5.)
3. A daughter of Heracles, is likewise described as a prophetess, and as the personage from whom the town of Mantua received its name. (Servius, Scholiast on Virgil's Aeneid)
From Smith's Dictionary of Greek and Roman Biography and MythologyFrom Description of Greece by Pausanias Book 1
(1.43.5) Beside the entrance to the sanctuary of Dionysus is the grave of Astycratea and Manto. They were daughters of Polyidus, son of Coeranus, son of Abas, son of Melampus, who came to Megara to purify Alcathous when he had killed his son Callipolis. Polyidus also built the sanctuary of Dionysus, and dedicated a wooden image that in our day is covered up except the face, which alone is exposed. By the side of it is a Satyr of Parian marble made by Praxiteles. This Dionysus they call Patrous (Paternal); but the image of another, that they surname Dasyllius, they say was dedicated by Euchenor, son of Coeranus, son of Polyidus.
From Apollodorus III
After travelling far the Thebans built the city of Hestiaea and took up their abode there. But the Argives, on learning afterwards the flight of the Thebans, entered the city and collected the booty, and pulled down the walls. But they sent a portion of the booty to Apollo at Delphi and with it Manto, daughter of Tiresias for they had vowed that, if they took Thebes, they would dedicate to him the fairest of the spoils.
[6.3] Well, they were lodged by the diviner Mopsus, who was a son of Apollo and Manto, and he wrangled with Calchas about the art of divination. A wild fig-tree grew on the spot, and when Calchas asked, “How many figs does it bear?” Mopsus answered, “Ten thousand, and a bushel, and one fig over,” and they were found to be so.
From The Aeneid by Virgil Book X
Ocnus was next, who led his native train
Of hardy warriors thro' the wat'ry plain:
The son of Manto by the Tuscan stream,
From whence the Mantuan town derives the name-
An ancient city, but of mix'd descent:
Three sev'ral tribes compose the government;
Four towns are under each; but all obey
The Mantuan laws, and own the Tuscan sway.
