n.
In Greek mythology , the wife of Perseus .
She was the daughter of King Cepheus and Queen Cassiope of Joppa in Palestine (called Ethiopia). Her mother boasted that Andromeda was more beautiful than the Nereids , and Poseidon punished her by sending a sea monster to devastate Joppa. To appease the gods, Andromeda was chained to a rock and left to be devoured by the monster. Perseus flew by on Pegasus , fell in love with Andromeda, and slew the monster. She married him and bore him six sons and a daughter. After her death she became a constellation.