[Dawndeath]

I'm rereading GotM, atm, and the introductory poem of chapter 20 struck me:

It is said that the Matron's
blood like ice brought forth into this
world a birthing of Dragons
and this flowing river of fate
brought light into dark and dark into light,
unveiling at last in cold, cold eyes
the children of chaos...
T'matha's Children
Heboric

Does this shed any light the Light/Shadow/Dark war? What is the role of Dragons in all this?
Am I correct in assuming T'matha is Tiam?

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Of old there was Sauron the Maia.