Early Hints at Bombadil?

[Inziladun]

I saw the title, and at first shuddered.

I have a similar view on Bombadil and Goldberry.
I see a parallel between them and Ungoliant.

In Avathar....Ungoliant had made her abode. The Eldar knew not whence she came; but some have said that in ages long before she descended from the darkness that lies about Arda, when Melkor first looked down in envy upon the Kingdom of Manwë, and that in the beginning she was one of those that he corrupted to his service. But she had disowned her Master, desiring to be mistress of her own lust..

The Silmarillion Of the Darkening of Valinor

Perhaps Bombadil too originally came to Arda in the service of a Vala, but decided he'd rather settle down with a 'kindred spirit' and do his own thing.