no one actually knows who came first, the 'dream' or the aeons. what is accepted, however, is that the persona of the dream was not established until after the aeons 'encountered' THEM, especially as eirlys seems to be an amalgamation of their 'desires'
for example, to name but a few, THEIR waking body was birthed by a tree of abundance: THEIR physical form cannot truly die and will simply sprout anew. like remembrance, THEY enter the minds and dreams of all at will and without permission. THEY are an empath and seek the happiness of all, just as harmony, however elation bleeds through in THEIR bright and jovial personality. on the other-hand, morrigan, the darker personality and crueler streak, resonates with the paths of voracity and hunt