As Chris mentioned, a Fey's true name is Important-with-a-capital-I. It gives you complete and utter control over them, up to and including the ability to simply blink them out of reality. You don't know the true name of any of the Fey.
So will MC ever learn it? Probably. But it won't happen in CK1, and likely not until CK3. Will the player ever learn it? Probably not. We'll see.
As for Shatter/Awaken, well that would be a plot spoiler... and no spoilers, sorry! ;)