[T]he 1937 (and later editions of) The
Hobbit simply is not LoTR, so pressing it too hard for "canon insights" into
Middle-earth remains iffy.
The 1937 telling of “
Riddles in the Dark” was rewritten by
Tolkien and first published anew in every edition of
The Hobbit beginning in 1951. This is alluded to in
Fellowship of the Ring in “Shadows of the Past”, when
Gandalf asks
Frodo what he already knows about the Ring and Frodo replies that he knows what
Bilbo told him, and Gandalf muses, “Which story, I wonder.” To which Frodo replies, “Oh, not what he told the
dwarves and put in his book. [] He told me the true story soon after I came to live here. He said you had pestered him till he told you, so I had better know too. ‘No secrets between us, Frodo,’ he said…” And again in “
Council of Elrond”, when
Elrond instructs Bilbo to tell his story of finding the Ring, Bilbo begins by looking at his friend
Glóin, a member of
Thorin & Company, and says, “I will now tell the true story, and if some here have heard me tell it otherwise, [here he looked at Glóin,] I ask them to forget it and forgive me. I only wished to claim the treasure as my very own …, and to be rid of the name of thief that was put on me.”
The Hobbit was originally a tale Tolkien
told to his children, written down because one evening young Christopher Tolkien, then about four or five years old,
evinced an obsession with detail:
“Last time, you said Bilbo’s front door was blue, and you said Thorin had a gold tassel on his hood, but you’ve just said that Bilbo’s front door was green, and the tassel on Thorin’s hood was silver;” at which point my father muttered “Damn the boy,” and then strode across the room to his desk to make a note.
Tolkien said that the inclusion of Elrond and
Gondolin in the story was initially incidental, that they were existing characters and
places in histories he constructed of the
Elves in Middle-earth to explain the changes he envisioned in
Quenya and
Sindarin. But the tale grew in the telling, and became the tale of the great
events that marked the end of the Elder Days, which was written and published before the
tales that comprise
The Silmarillion could be published.
We cannot refer to pre-1951 editions of
The Hobbit for “canon”: the author rewrote and republished the work during his lifetime to better align it with
The Lord of the Rings.