Ogygia was an ancient name for Egypt. Butler claimed that the Odyssey uses various sites on Sicily, and that it was written by a woman. I never have liked the Odyssey, and haven’t much cared for the Iliad either, but just from the translations I’ve had access to over the years, it’s clear they weren’t written by the same author (or authors). The Odyssey comes off as an ancient romance novel.
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I always thought it was Malta. Or thereabouts.
“Ogygia was an ancient name for Egypt.”
But Egypt is not an island, and Ulysses visits Crete early on in his travels, which is right next to Egypt. So it makes no sense for him to get stranded on Ogygia in the mid-point of his journey after he left the area of Egypt heading west/northwest before being blown off course.
“The Odyssey comes off as an ancient romance novel.”
There’s a bit of that but it seems to me that there are veiled references to real places in it, but that the more “fantastic” places are ones that Greek sailors may have heard about, but probably never visited themselves.
Timaeus by Plato
Translated by Benjamin Jowett
http://classics.mit.edu/Plato/timaeus.html
Critias by Plato
Translated by Benjamin Jowett
http://classics.mit.edu/Plato/critias.html
Key to Map of Possible Route of Odysseus
Graphic: Tim Severin, The Ulysses Voyage: sea search for the Odyssey (London 1987).
Text: adapted from Erich Lessing, The Voyages of Ulysses (Vienna 1965) and other sources
https://pages.uoregon.edu/nateich/worldlit/mapkey.html