(Φορωνίς), a surname of Io, being according to some a descendant, and according to others a sister of Phoroneus. (Ov. Met. 1.668 ; Hyg. Fab. 145.)
[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