[Bear_in_RoseBear]

and it will summon spirits from afar, and they will go among the kelvar and the olvar, and some will dwell therein, and be held in reverence

Just realized, this may be where Bombadil comes from, too.

[Vast Buffalo Wing Conspiracy]

It may also be where Beorn comes from; although he is a mortal man, he clearly has powers beyond that of mere mortal men, and his powers are that of one of the kelvar - taking the form of a giant bear, and apparently some of his descendants also had this power. Also, Bard's ability to understand the language of birds, a trait inherited from his ancestors, speaks to a similar origin. It is a fading gift, growing weaker in each passing generation, but it is highly suggestive of these spirts of kelvar and olvar, summoned "from afar".