Merope in Greek and Roman Biography and Mythology
3. A daughter of Atlas, one of the Pleiades, and the wife of
Sisyphus of Corinth, by whom she became the mother of Glaucus.
In the constellation of the Pleiades she is the seventh and
the least visible star, because she is ashamed of having had
intercourse with a mortal man. (Apollod. 1.9.3, 3.10. 1; Ov.
Fast. 4.175; Eustath. ad Hom. p. 1155; Serv. ad Virg. Georg.
1.138; comp. Hom. Il. 6.154; Schol. ad Pind. Nom. 2.16;
SISYPHUS.） - A Dictionary of Greek and Roman biography and
mythology, William Smith, Ed.