Erichtho
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In Roman literature, Erichtho is a legendary Thessalian witch. In the epic by the poet Lucan, Pharsalia (VI, 507—830), she summons a spirit to reveal to Pompey the Great's son, Sextus Pompeius, the outcome of the Battle of Pharsalus. She is also mentioned by Dante Aligheri in his The Divine Comedy (Inferno: IX 23), where Virgil tells of having been compelled by her to descend into the deepest part of hell to bring back a spirit.