EURYBIA was the goddess of the mastery of the seas. She seems to have presided over the external forces which influenced the main, including the rise of the constellations and seasonal weather, and the power of the winds. Her husband was the Titan Krios, who may have been associated with the constellation Aries, marker of the Greek new year. Her grandchildren all had power over the sea. They included the Anemoi (Winds), the Astra (Stars), Hekate (Witchraft), Selene (the Moon), Nike (Victory), Bia (Force), Kratos (Power), Zelos (Rivalry). Some of these represent human command of the seas : the winds for sailing, stars for navigation, and force, power and victory representing naval supremacy.
EURY′BIA (Eurubia), a daughter of Pontus and Ge, who became by Crius the mother of Astraeus, Pallas, and Perses. (Hes. Theog. 375 ; Apollod. i. 2. § 2.)
Source: Dictionary of Greek and Roman Biography and Mythology.
Hesiod, Theogony 233 ff (trans. Evelyn-White) (Greek epic C8th or C7th B.C.) :
"And Pontos (the Sea) begat Nereus . . . And yet again he got great Thaumas and proud Phorkys, being mated with Gaia (the Earth), and fair-cheeked Keto (Ceto) and Eurybia who has a heart of flint within her."
Hesiod, Theogony 375 ff :
"Eurybia, shining among goddesses, was joined in love with Krios (Crius), and brought forth the great Astraios (Astraeus, the Starry-One) and Pallas (the Warrior) and Perses (the Destroyer)."
Pseudo-Apollodorus, Bibliotheca 1. 10 (trans. Aldrich) (Greek mythographer C2nd A.D.) :
"The children of Pontos (the Sea) and Ge (the Earth) were Phorkos (Phorcus), Thaumas, Nereus, Eurybia, and Keto (Ceto)."
Pseudo-Apollodorus, Bibliotheca 2. 8 :
"The Titanes had children . . . To Kreios (Crius) and Eurybia, the daughter of Pontos (Sea), were born Astraios (Astraeus), Pallas, and Perses."
- Hesiod, Theogony - Greek Epic C8th-7th B.C.
- Apollodorus, The Library - Greek Mythography C2nd A.D.