Is Eru God?

[Formendacil]

Originally Posted by Cailín

And since I have read quite a few times on the Downs that Tolkien hated allegories, I don't think he intended Eru to be the elvish name for God. He might have just - being catholic himself - been unable to conceive a world not having a Creator and therefore inserted Eru to make Middle Earth more real in his view.

Ah, but it's not an allegory- it's a (fictional) history. Of this world.

Therefore, if Tolkien believed in this world having a God- which he did- then that same God would have existed during the time of the fictional history.