Background
Tír na nÓg has four magical cities:
Falias
Gorias (or Goirias)
Findias (or Finias)
Murias (or Muirias)
In each city, was a magical treasure or talisman, which the Tuatha Dé Danann received when they settled in Ireland. Eg. for Falias it was the Lia Fáil aka the Stone of Destiny and he has a nod to this in the simple stone necklace he wears
Information
I wasn't able to find tons of information online, but the information that has been found is below and may be useful for working on quests:
Wikipedia
Celtic World and Cultures (under Irish Otherworld)
Tír na nÓg Cities (found by Cooro)
More information on the individual four treasures (found by Cooro)
Looking for
Currently Falias is the only Knight from one of Tír na nÓg's magical cities to have awakened, but if anyone is interesting in questing and ends up winning art for one of the other 3 cities then I'd love to plot with you, maybe even (if rp leans that way) have them team up. I'm aware that there is also a Tír na nÓg Knight and would love rp with her owner too. The Knights don't necessarily need to be Earth Knights, Earth just fit Falias for me - I just want four magical cities knight plots