(Ἰόπη), a daughter of Aeolus and wife of Cepheus, from whom the town of Joppa derived its name. (Steph. Byz. s. v.) In the legends of Perseus and Andromeda, she is called Cassiopeia.
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890