Off topic? Count me in with a reeeaaal
sleep inducer!
Maeglin is usually noted as betraying the location of
Gondolin in that he seemingly gave the needed details to allow an assault to take place. If I recall correctly, in earlier versions of the
Túrin saga,
Húrin's release did not reveal the location of Gondolin in any measure, thus the following from The Wanderings of Húrin is a newer conception:
"Yet there were ears that heard the words that Húrin spoke, and report of all came soon to the Dark Throne in the north; and Morgoth smiled, for he knew now clearly in what region Turgon dwelt, though because of the eagles no spy of his could yet come within sight of the land behind the Encircling Mountains. This was the first evil that the freedom of Húrin achieved." JRRT, The Wanderings of Húrin, The War of the Jewels -- used in
Of the Ruin of Doriath, The Silmarillion.
CJRT then reveals:
"At this point in the draft manuscript my father wrote: "Later when captured and Maeglin wished to buy his release with treachery, Morgoth must answer laughing, saying: Stale news will buy nothing. I know this already, I am not so easily blinded! So Maeglin was obliged to offer more -- to undermine resistance in Gondolin.' [a further note of almost exact wording adds] 'and to compass the death of Tuor and Earendil if he could. If he did he would be allowed to retain Idril (said Morgoth)." Note 30 The Wanderings of Húrin
I have no problem with Christopher
Tolkien's decision to combine descriptions here for the 1977 Silmarillion. Combining the 1930
Qenta Noldorinwa (QN) and the
Wanderings of Húrin (WH) leaves the impression that Húrin betrayed a general location, and Maeglin's betrayal was needed for the assault -- that is, Maeglin provided the "very" location (
the word very was added by CJRT for The Silmarillion), and 'the ways whereby it might be found and assailed' (from QN). Christopher Tolkien (commentary The
Fall of Gondolin, The Book of Lost
Tales) even notes that:
"Thus in the Silmarillion Morgoth remained in ignorance until Maeglin's capture of the precise location of Gondolin, and Maeglin's information was of correspondingly greater value to him, as it was also of greater damage to the city."
But
if the notes revealed in WH were meant to imply a revised conception (I don't think CJRT would necessarily disagree with that, unless I've missed something crucial here, though granted I have no
certain way of knowing in any case), then what of the impression if we exclude Qenta Noldorinwa?
CJRT noted in the Foreword of WJ that so much of the last chapters of
Quenta Silmarillion remained in the form of the Qenta Noldorinwa of 1930 (aside from meagre hints) -- in other words, they weren't updated in the 1950s for example, like earlier chapters had been, and:
"For this there can be no simple explanation, but it seems to me that an important element was the centrality that my father accorded to the story of Húrin and Morwen and their children, Túrin Turambar and Nienor Niniel. This became for him, I think, the dominant and absorbing story of the end of the Elder Days, in which complexity of motive and character, trapped in the mysterious workings of Morgoth's curse, sets it altogether apart. (...)"
He then notes the new dimension to the ruin that Húrin's release would bring: his catastrophic entry into the land of Haleth's people (WH). But could Húrin as the 'principle betrayer' of the location of Gondolin be part of this too?
In very early
The Book of Lost Tales the information about Gondolin from Meglin concerns the fashion of the plain and city, of the host, and the hoard of
weapons, and he tells that Melko's host could not hope to overthrow the
walls and gates of Gondolin even if they availed to win into the plain.
Morgoth already knew where Gondolin was, but Meglin helped him devise a plan. The idea that Maeglin's treachery would involve other factors beyond location would not be a wholly new departure, then, but rather more like a return to an earlier notion (in general at least), where Melko already knew the location of Gondolin.
I also find Christopher Tolkien's choice of phrasing here interesting (the first is from commentary to WH, followed in the book by the text from QN -- the second from commentary to the Tale of Years):
"Thus the story in Q was changed (IV. 143)' [] '510 The story that the site of Gondolin was revealed to Morgoth by Maeglin was later changed: see pp. 272-3 and note 30." To my mind, that's a rather simple way of putting things if the story was not
notably changed. In other words, if Húrin's words were simply too general to be of real use, then how much has the story "changed" if Maeglin essentially still provides the needed location of Gondolin?
Anyway, pleasant dreams