When I was playing through the game I thought that the Knight/wolf was actually the Link from Wind Waker. The Temple of Time is very similair to the temple seen in Wind Waker. He did know the Ballard of wind, and some of the moves he teaches Link were performed by Link in the Wind Waker (like rolling around the enemy and slashing his back-- I don't recall the OoT Link being able to do that).
I assumed that their was an untold part of the story where Wind Waker Link (or some other Link we don't know about) managed to 'rise' Old Hyrule (I personally think that there will a second sequel to Wind Waker eventually-- or at least I hope so, I really liked the art style).