(Πρόκνη), a daughter of king Pandion of Athens, was the wife of Tereus, and was metamorphorsed into a swallow. (Apollod. 3.14.8; Thuc. 2.29.)
[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