No.449
I looked to see if it was in Wikipedia's Eris (disambiguation) page (
https://en.wikipedia.org/wiki/Eris_(disambiguation) ) but it is not.
No.451
Something powerful is intentionally snubbing the existence of Eris's influence
No.455
This is the only other place that mentions an Eris glacier in Iceland but it is clearly talking about Eiríksjökull:
https://www.islande-zou.fr/traces-bandits-vikings-grotte-de-lave/