I have actually read that book (The Father Christmas Letters)… it was one of the ones the library had on display at Christmas time many years ago, with the note “These books are available to be checked out; ask a librarian”, and of course I saw Tolkien’s name, and did ask the librarian, and checked it out. But that said, I can’t remember any substantive details from it.
Since you’ve opened up the field for non-Middle Earth Tolkiana, though…
Who spoke very poor English, and not even dog-Latin?
Sorry… much busy at work. Roac, as has been pointed out previously, was the correct answer to my Q112. And, doing this by memory, as also has been pointed out is hard - - Wingfoot, Lightfoot. Of course, now I’ll never confuse the two.
The religious reference is a toughie, since I can think of quite a few contenders.
a) Gandalf says that Bilbo was meant to find the Ring, and not by its master.
b) The Elves sing about Elbereth, who is (by the standards of Men, at least) a goddess.
c) Gandalf identifies himself to the Balrog as “a servant of the Secret Fire”, which is a Middle-Earth term for the Holy Spirit.
d) After that battle, Gandalf was “sent back”, but none of the Valar had the authority to send him back.
e) One of the songs of the Rohirrim mentions Orome, another god (by the same standards as Elbereth).
f) Men of Gondor look to the West before meals. Even though there’s no divinity mentioned in the practice, this seems rather religious.
g) In the Appendix on Aragorn and Arwen, Arwen refers to death as “the gift of the One to men”, the One being of course God.
The last of these is, I think, the most obvious, but being in the Appendices, I’m not sure it counts. Of the rest, Gandalf’s mention of the Secret Fire is the only direct reference to God. And looking to the West is the only practice on that list, and Tolkien might have been making a distinction between theology and religion. So I’m going to guess that it’s one of those three.