The Halitherses reference article from the English Wikipedia on 24-Apr-2004
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Halitherses

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In Greek mythology, Halithersês was an Ithacan prophet who warned the suitors of Odysseus's wife Penelope to "be wise in time, and put a stop to this wickedness before he comes."

The suitors do not heed Halithérses' warning.

See also The Odyssey