Belias is part of Ivalice Alliance (as Chaos, Zalera, Zeromus, Addramalech and so on) which is mainly FF Tactics and FF XII.

I don't see other Lore specific things that would pop on XIV, since it isn't part of Ivalice. So I don't even see how they would actually reefer to an Esper from said history line if XIV is not related.

Maybe they needed a random name and used it.