A Dictionary of Greek and Roman biography and mythology

(Θεονόη).

1. A daughter of Proteus and Psammathe, who is said to have been in love with Canobus, the helmsman of Menelaus, who died in Egypt, in consequence of the bite of a snake. She is also called Eido or Eidothea. (Eurip. Helen. 11 ; Aristoph. Thesm. 897 ; Plat. Cratyl. p. 407; Hom. Od. 4.363.)