Quote Originally Posted by myahele View Post
The Elfin Bow in the loorbook talks about how there was once an tall and slender race knowns as "Elves" that the Allagans warred with and made extinct I think. It's not known if they were related to the modern Elezens.

At the very least, it looks like some racial names were shared between the Source and the 1st, but due to various reasons the names changed between shards. Makes sense since they all had the same origins until the Hydaelyn split the world
It was also confirmed via minions that Elezens, Miqo'te, and Lalafell were known by the equivalent FFXI race names, Elvaan, Mithra, and Tarutaru, at one point in their respective histories on the Source, so there are already examples of names changing in game.