Andromeda was the beautiful daughter of King Cepheus and the extremely vain Queen Cassiopeia. On one occasion the Queen boasted that her daughter Andromeda was even more beautiful than the Nereids, the alluring sea-nymph daughters of Poseidon, the God of the Sea.
Many of the constellations have heroic or tragic tales associated with them. Cassiopeia is one of those constellations but differs from most of the constellations for one reason; vanity, plain and simple, is what earned Cassiopeia a place in the heavens. On an interesting note, the only husband-and-wife constellations couple in the sky are Cassiopeia and her husband Cepheus.
