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Daughter of Phorcys Pharcos - and Cetus Wife of Poseidon Mother of Pegasus and Chrysaor Sister of Persis Graeae; Hesperides; Pemphredo - Graeae; Enyo - Graeae; Stheno - Gorgon ) and 5 others; Eurayle (Γοργών; Dino Deino - Anger Graeae; Scylla; Esteno and Echidna « less Half sister of Escila
http://en.wikipedia.org/wiki/Medousa
http://www.theoi.com/Pontios/Gorgones.html
http://en.wikipedia.org/wiki/Gorgon
http://en.wikipedia.org/wiki/Medusa