Goekoop
Cees Goekoop, former mayor of the Dutch city of Leiden, came up with his own theory about the location of Ithaca: Erissos, the northern part of the island of Kefallinia.
His search was initiated by questions posed to him by his daughter about his grandfather, Adriaan Goekoop, who had published about Ithaca decades earlier. Adriaan Goekoop and his wife were in contact with Wilhelm Dörpfeld, whom they visited in Lefkada and whose work they funded. After Adriaan's death, his wife continued funding Dörpfeld.
I would strongly recommend his book, because even though Cees Goekoop's findings about his Ithaca aren't conclusive, his ideas are very interesting, some of which I have used for this website.
Cees Goekoop published his findings in Dutch in his book: "Op zoek naar Ithaka". After he died in September 2011, his daughter took the initiative and had his book translated in English: 'Where on earth is Ithaca'. So, his theory is now within reach of a much larger audience.
Much like the others, except for Wilhelm Dörpfeld, his low-lying meant 'close to the mainland'.
Ithaca
Mainland
Samos
Zacynthos
Doulichion