Blue Mage

[Iscah]

Merlwyb's (or some other Lominsan, might have been her dad or Mistbeard) big claim to fame is that she (they) led an expedition (or series of) across the sea to the New World and established trade with the natives there or something, if I recall correctly. Best off asking the Moose or one of the other loremongers for the specifics of that last bit.

It's in the lorebook in the section on geography. It wasn't Merlwyb or another known character though - someone called Ketenramm the Blue, and his voyage was in 1497 (80 years prior to the "present time").

All we solidly know is that the Mamool Ja homeland is there, and they seem to be somewhere in the ever-blurred-in-popular-culture Maya/Inca/Aztec realm of civilisations.

There's also the "New World" (native American) glamour set which suggests there is at least one equivalent culture there, and the page on Hyur says there is a population in the New World.

Does this mean the job NPC for BLU is a Sharlyan? Or is there some other place that refers to Eorzea as "the New World" that I'm unaware of?

The Sharlayan homeland is the "Old World". I was confused by that for a while too.