User blog comment:Deyuaru/Research Data of "E Pluribus Unum"/@comment-27654842-20160222134154

I found something regarding "The Shining Argatorum", according to Beast's Lair it's related to this: https://en.wikipedia.org/wiki/Nuada_Airgetl%C3%A1m

Though I don't know if it's real or not. As far as I know, there's no other ancient Irish Servants in my list of upcoming new Servants. The only thing that connects it to currently released ancient Irish Servants is Connacht, and speculations that Nuada is Fionn's maternal grandfather.