Erigone (Ἠριγόνη) is the Athenian girl who, finding her father Icarius murdered, hanged herself from a tree in grief. She was placed in the sky as **the constellation Virgo**, and her dog Maera as Sirius — the Dog Star.
Featured in Ovid's Metamorphoses and Hyginus's astronomical mythology.
Erigone reduces to four — the number of Virgo constellation.