The Draconic Isles
The Draconic Isles is the singular name given to the thousands of islands that dot the surface of Io’Tamrin. And they are called the Draconic Isles for good reason.
By ancient law, all land belongs to the scions of Io—the true dragons. This was true when Io’Tamrin had vast continents; it is still true now. When a dragon reaches adult age, it is expected to leave its nest and claim an island of its own. A weak dragon might find a small, uncontested island to rule. An elder dragon or ancient wyrm will seek to rule the largest island it can find, preferably one with abundant food supplies. Not every island of Io'Tamrin has a dragon overlord. Some islands are simply too small or wretched. Others are hotly contested. Others still haven’t been claimed because no dragon has found them yet.
When a dragon takes ownership of an island, it expects all of the island’s other inhabitants to pay it tribute. Those who do not comply are devoured or driven off. Most sensible creatures acknowledge the dragon’s status and may even stand to benefit from the dragon’s protection (depending on its disposition). An island always adopts the name of the dragon that lives there; when a dragon overlord changes, so too does the island’s name . . . much to the chagrin of the world’s foremost cartographers.
Nothing is more precious to a dragon than its island dominion. A dragon that cannot find an island to rule will do anything to wrest control of one. Dragons who rule islands must therefore be wary of rivals. Their lairs are often trapped or guarded, and they are smart enough to use minions or adventurers to eliminate likely challengers.
It’s worth noting that over the course of history, many influential dragonborn warlords and emperors have claimed to be scions of Io, but the true dragons of the world have never acknowledged such claims. In one notable case, an ancient gold dragon named Mazuzura openly refuted such a bold claim made by Emperor Azunkhan V of the Dragovar by attacking his palace in broad daylight and devouring him. Today, the Dragovar Dynasty spans dozens of major islands, all with powerful dragon overlords. These mighty dragons horribly tax the coffers of the Dragovar, but they also provide the greatest protection that gold can buy.