An Eorzean Timeline.

[Endemerrin]

Few things I noticed that seemed off. Take 'em with a grain of salt, though. :>

Ququruka creates Barbatos to destroy Eorzea.

Fairly certain this is incorrect. [Black Mage quest spoilers] If I remember correctly, the entire plot behind the Black Mage story is that Ququruka accidentally twisted his friends into the abomination that is Barbatos when a Black Magic spell they were attempting to cast backfired. He ended up sealing it away and made up the story in order convince the Thaumaturges to lock him away because he felt guilty about what he had done. He ended up biding his time until another Thaumaturge came along (I.E your character) that was powerful enough to slay Barbatos and finally allow his friend's souls to rest. I also don't remember this having a specific date.

A Great Flood submerges and damages many parts of Eorzea. Possibly caused by Urianger and the Archons.

No idea where the last bit comes from. Seems like old speculation and doesn't really make any sense at all. If some one has actual proof of that, though, feel free to correct me on that. I'd like to think speculation should be left out of a timeline, however. Just my personal opinion, of course.

The Empire resumes the advance into Eorzea under Nael van Darnus' and the VIIth Legion.

Fairly certain this occured in 1572, not in 1571. The game began in 1572 according to Fern, and the VIIth legion did not start it's invasion of Eorzea until after the start of the game.