[Boromir88]

Aiwenedil, yes the UT does say that about Galadriel, but it appears she evolved, or became that way in Tolkien's story. Galadriel and Celeborn was a changing story in Tolkien's thoughts, and it appears that speaking strictly of the UT I see no reason to dispute this:

Galadriel was the greatest of the Noldor, except Fëanor maybe, though she was wiser than he, and her wisdom increased with the long years.~UT, Galadriel and Celeborn

However:

There is no part of the history of Middle-earth more full of problems than the story of Galadriel and Celeborn, and it must be admitted that there are severe inconsistencies "embedded in the traditions"; or, to look at the matter from another point of view, that the role and importance of Galadriel only emerged slowly, and that her story underwent continual refashionings.~Preface to Galadriel and Celeborn

The Galadriel and Celeborn story went under several 'refashionings' and their characters became more important later on in Tolkien's mind. So, I think when we look at The Silmarillion or LOTR there may be inconsistancies, because the story of Galadriel and Celeborn constantly underwent changes.

So, I think eventually in Tolkien's latest writings Galadriel did become (to him) the greatest of the Noldor, save for Feanor. However, I think if we look back and the Silmarillion than I think we can question whether Galadriel was the greatest save for Feanor. She clearly was strong and powerful in the Silmarillion, but she wasn't as powerful as what she would eventually become in Tolkien's latest writings on the subject.

narfforc, I do think Celeborn goes under-appreciated, at times I think he's even forgotten. I would believe save for Cirdan he is one of the oldest Elves on Middle-earth during the Third Age, he's got to be right up there with Galadriel I'm thinking. But, I think we can't take Galadriel saying that he was the wisest of the Elves in Middle-earth. Tolkien's characters are liable to be mis-informed or wrong, and not necessarily in line with what he thought. I think Galadriel was just sweet-talking him or buliding up his confidence. There's no doubt he is one of the wisest, and oldest, during this time, but the wisest...I don't know about that.