I legit forgot what the Fire Emblem was in this.
Though to be fair I can't remember what it was in FE4/FE5 (was it a gem in Tyrfing or something) and I think outside of the Archanea games it always gets shoehorned in so that they have a reason to keep the title, lol. The best are in FE8 and FE9/10 where it's just another name for an object that they mention and then never refer to it as the Fire Emblem again.
FE4/5 is house Velthomer's crest or some BS
Do they even call the Dark Stone the FE out of Ephraim's route?