Eusebius, Onomasticon 94,1-2 (ca. 295 A.D.); Jerome 95:1-2 (ca. 390 A.D.)
Zogora in the Book of Jeremiah (Jer 48:34), a city of Moab: today it is called Zoara or Segor, one of the five cities of Sodoma.
Eusebius, Onomasticon 150:19-20 (ca. 295 A.D.); Jerome 151:18-19 (ca. 390 A.D.)
Soora (Gen 19:15-29), a city in the vicinity of Sodoma, which is called also Segor and Zoara, of which we spoke above.
Josephus, War IV:482 (1st cent. A.D.)
The length of this lake is five hundred and eighty furlongs, where it is extended as far as Zoar, in Arabia; and its breadth is a hundred and fifty.
Josephus, Antiquities XIII:395-397 (1st cent. A.D.)
Now at this time the Jews were in possession of the following cities that had belonged to the Syrians, and Idumeans, and Phoenicians: At the seaside, Strato's Tower, Apollonia, Joppa, Jamnia, Ashdod, Gaza, Anthedon, Raphia, and Rhinocolura; 396 in the middle of the country, near to Idumea, Adora, and Marissa; near the country of Samaria, Mount Carmel, and Mount Tabor, Scythopolis, and Gadara; of the country of the Gaulonites, Seleucia, and Gabala; 397 in the country of Moab, Heshbon, and Medaba, Lemba, and Oronas, Gelithon, Zara, the valley of the Cilices, and Pella; which last they utterly destroyed, because its inhabitants would not bear to change their religious rites for those peculiar to the Jews. The Jews also possessed others of the principal cities of Syria, which had been destroyed.
Egeria, Itinerarium XII, 6-7 (381-384 A.D.)
To our left was the whole country of the Sodomites, including Zoar, the only one of the five cities which remains today. There is still something left of it, but all that is left of the others is heaps of ruins, because they were burned to ashes. We were also shown the place where Lot's wife had her memorial, as you read in the Bible. But what we saw, reverend Ladies, was not the actual pillar, but only the place where it had once been. The pillar itself, they say, has been submerged in the Dead Sea - at any rate we did not see it, and I cannot pretend we did. In fact it was the bishop there, the Bishop of the Zoar, who told us that it was now a good many years since the pillar had been visible. It used to stand near the sixth milestone from Zoar, but was now completely submerged by water. (Egeria uses the LXX and Latin name "Segor").
Hierocles, Synecdemos 717:8-719:11 (7th cent. A.D.)
Province of Palaestina Tertia, 10 cities under a praeses: Petra, Augustopolis, Arindela, Charachmuba, Areo-polis, Zoara, Mampsis, Bitarous, Elusa, Salton.
Georgius Cyprius, 1043-1057 (7th cent. A.D.)
Province of Palaestina Tertia: Petra, Augustopolis, Arindela, Charachmoba, Areopolis, Mampsis, Elusa, Zoora, Salton, Berosaba (Beersheba), Aila, Pentakomia, Mampsara, Metrokomia, Salton Hieratikon.