The Location Names thread

[Naria]

This one is already in the game! Alison at Mor Dhona (22,6) just up the hill from the Aetheryte says:

Alison: Well met, friend, and welcome to Revenant's Toll. Is there aught you wish to know?
Alison: This facility was established under the auspices of the Adventurers' Guild. It used to be situated a short distance to the west, but the Calamity laid the original camp to waste.
Alison: When the reconstruction of aetheryte camps began across Eorzea, it was decided that Revenant's Toll would be relocated to where we now stand.
Alison: Ah, mayhap you wonder where the camp got its name. Well, some years before the Sixth Astral Era ended, an imperial airship fell from the skies and crashed here.
Alison: The impact was such that an entire settlement was annihilated in the blink of an eye. When the camp was built, it was named in remembrance of those poor souls who died in the tragedy.

Edit: ninja'd above

Edit 2 to avoid double post:

The name that I would really like an explanation for is the Eighty Sins of Sasamo