First Undiscovered Island

The first island ever to be undiscovered has been… undiscovered.
Somewhere in the niddle of nowhere, shown on the map below, the first undiscovered island has apparently been found, or maybe unfound.
See if you can find it.

If you find it, email me. I feel the need to be King of somewhere and I can’t imagine anywhere better than the first undiscovered island in the world.