A goddess of dreams. Daughter of King Cepheus and Queen Cassiope. Cassiope offended the Nereids by boasting that Andromeda was more beautiful than they were. In retaliation Poseidon, their father, sent a sea monster to devastate the kingdom. In order to escape from this destruction it was determined that Andromeda had to be sacrificed to the monster. She was chained to a rock at the shore for the monster to devour. Perseus, flying by on the winged horse Pegasus saw her and fell in love with her. He slew the sea monster and married her. They had six sons and a daughter. At her death she was placed among the stars as the constellation Andromeda.