An Eorzean Timeline.

[Myranda]

I question it somewhat. Read the race biographies for Elezen and Hyur on the NA site. We're told that the Elezen were the sole inhabitants of Eorzea until the Hyur migrated in what was akin to invasion. The Hyur have been in Eorzea for a thousand years. That's nothing; the Sixth Astral Era alone was 1,572 years - and the Allag were destroyed in the Fourth.

There's a pretty good chance that all of the Allag were Elezen.

But is it not true that the miqo'te came over the frozen seas during a previous umbral era? If the hyurs were the first immigrants to Eorzea, certainly they must have do so well before 1000 years ago, at least before the miqo'te migration.