Quote Originally Posted by Dualgunner View Post
Bahamut is not Hydaelyn's son, firstly--he's a member of the First Brood, direct descendants of Midgardsormr. A status that Tiamat and Nidhogg shared. Beyond that, the best I can say is the Ascians know more about summoning primals than we do--they've been at it longer. Anger and aether have summoned primals before. Perhaps someone on the lore forums, maybe Anonymoose, could better answer these questions.
I think during the Allied Beast Tribe(ARR one) that there was a primal summoned by grief. It's been a little while since I've done it, so can't be 100% sure on it.