[Treebeard/Tom Bombadil] Fangorn/Treebeard= Oldest?

[Legolas]

I´m just wondering if Fangorn is the oldest living being in ME? And if so isn´t the case, then who is?

Tom Bombadil, apparently.

Not Treebeard, definitely.

When asked about the matter, Tolkien noted that while Treebeard does have some wisdom, he is not all-knowing. He is not the author, but just a character in the author's story.

From Letter No. 153:

Treebeard is a character in my story, not me; and though he has a great memory and some earthy wisdom, he is not one of the Wise, and there is quite a lot he does not know or understand. He does not know what 'wizards' are, or whence they came.

This thread is a duplicate.