Fáilicon
Adds Celtic Paganism to EU5!
Additionally, (some) tribesmen pops around the coast in the Dál Riada region have been converted to allow the player to convert to Celtic Paganism. The ‘gods’ (Áes Sídhe) are from the Four Irish Cycles, though holy sites can be found for a variety of Celtic beliefs.
You can find the various Celtic holy sites at:
Trim (Hill of Tara)
Anglesey (Ynys Môn)
Vannes (Menhirs of Carnac)
Mann (Isle of Mann)
Lugo (Galicia)
Ischl (Lake Hallstatt)
You can find a Chinese localization of this mod at:
https://steamcommunity.com/sharedfiles/filedetails/?id=3599706198
by 牛奶大魔王
You can find a large repository of Celtic texts and information at:
http://www.maryjones.us/
The thumbnail featured is by Howard David Johnson and is called ‘The Death of Cú Chulainn’:
https://www.howarddavidjohnson.com/