Adam Clarke on Genesis 10:4

Elishah - As Javan peopled a considerable part of Greece, it is in that region that we must seek for the settlements of his descendants; Elishah probably was the first who settled at Elis, in Peloponnesus.

Tarshish - He first inhabited Cilicia, whose capital anciently was the city of Tarsus, where the Apostle Paul was born.

Kittim - We have already seen that this name was rather the name of a people than of an individual: some think by Kittim Cyprus is meant: others, the isle of Chios; and others, the Romans; and others, the Macedonians.

Dodanim - Or Rodanim, for the ד and ר may be easily mistaken for each other, because of their great similarity. Some suppose that this family settled at Dodona in Epirus; others at the isle of Rhodes; others, at the Rhone, in France, the ancient name of which was Rhodanus, from the Scripture Rodanim.