Many of the islands, traveler, came to be Narnian possessions in time unknown. Galma, Terebinthia, and the Seven Isles have a mysterious history while The Lone Islands came under Narnian lordship in Narnia's Fourth Century. The islands east of the Lone Islands were claimed by Caspian X of Narnia on his infamous voyage to the End of the World. Allow me to enlighten you on the islands...
Avra - one of the Lone Islands. (see Lone Islands)
Brenn - one of the Seven Isles. (see Seven Isles)
Burnt Island - Small island off the coast of Dragon Island. It was here that Reepicheep acquired the coracle which carried him into Aslan's country. Burnt Island was so named for the blackened and charred remains of some settlement. The scorchings were attirbuted to dragons (or pirates, no one could be sure which). Dark Island - a mist-shrouded island near the world's end. The Lord Rhoop remained on Dark Island because it was a land where dreams come true (not daydreams or longings, but dreams). Rhoop was rescued by Caspian and his shipmates. After the island was vacated, it mysteriously vanished. Deathwater Island - one of the islands of the eastern sea beyond the Lone Islands. Deathwater Island, originally called Goldwater Island, was named so by Reepicheep the Mouse when it was found that the water which turns any object into gold also produced a curse which turned brother against brother. It was on Deathwater Island that the Lord Restimar met his doom when he opted for a swim in the island's cursed waters. Be wary traveler, for like the Sirens in the stories, so will a voyage to Deathwater Island be your doom. Doorn - one of the Lone Islands. (see Lone Islands)
Dragon Island - an island in the Eastern Sea beyond the Lone Islands. Dragon Island is so named because it is where Eustace, and it is supposed the Lord Octesian, became a dragon. The wary traveler may avoid Dragon Island or else join the likes of Eustace and Octesian and suffer the lone fate of a dragon. Dufflepud Island - home of the Monopods (or Dufflepuds as they came to be known). These gentle people are ruled by Coriakin, a former celestial star, under the care of Aslan. Caspian and his mates landed on Dufflepud Island while its inhabitants were invisible. Through Lucy's valiance, the Dufflepuds were made visible again. It is certain that travelers would be welcome on Dufflepud Island, though conversation with its inhabitants may prove wearisome. Felimath - one of the Lone Islands. (see Lone Islands)
Galma - coastal island of Narnia, one day's journey from Cair Paravel. It was on Galma that Caspian competed in (and won) a great tournament and was offered the Duke's daughter in marriage, whom Caspian kindly refused. The traveler would make Galma his first stop on the eastward voyage as its inhabitants are loyal to the Crown of Narnia. Lone Islands - a group of three islands (Avra, Doorn, and Felimath) about 3 weeks sailing from Cair Paravel. The Lone Islands came under authority of Narnia in the time of King Gale of Narnia in the year 302 when the King delivered the islands from a dragon. It was on Felimath, a delightful, green island, that Caspian and his friends were captured by the slaver Pug and taken to Narrowhaven on the Island of Doorn for market. The traveler need not fear the Lone Islands, however, as Caspian put an end to the marketing of slaves in all of Narnian dominions. The Lord Bern made his home on Avra and was later named Duke of the Lone Islands by Caspian. The islands are loyal to the Crown of Narnia and the traveler may well spend some weeks there before continuing the eastward journey. Muil - one of the Seven Isles. (see Seven Isles)
Seven Isles - a group of islands about a fortnight's journey from Cair Paravel by way of Galma and Terebinthia. The principle islands in the group are Brenn, Muil and Redhaven. The people of the Seven Isles are loyal to the Crown of Narnia and welcome visitors. Tashbaan - a river island south of the Southern Desert in the realm of Calormen. Tashbaan is the location of the Tisroc's palace. Susan was threatened in the palace of Tashbaan when she refused to marry Rabadash. The traveler may decide to travel through Tashbaan but it is recommended that caution be exercised. Terebinthia - coastal island of Narnia about 5 days journey from Cair Paravel by way of Galma. In Caspian's time the island was stricken with a contagion of some variety. It can be assumed that there is no danger to you the traveler. The inhabitants of Terebinthia are loyal to the Crown and will present themselves in royal fashion upon your arrival.