Personally, I fold third facing a raise. You have only undercards, with probably two Queens out (since the raise implies QQ), dead J and Ts. You caught perfect cards on 4th (I still wouldn't raise here) and 5th, and I think you're right to pound it from then on.

As late as sixth street you have a board lock over everyone but seat 8, and he needs 77, 74 or J7 pocket cards precisely to have you beat. Rolled 4s impossible, pocket JJ impossible. He didn't raise until the river, so if he's got quads or a full house, he sure played this passively.