So long story short, we don't know for sure when exactly this 'differing wording' that appears in LQ2 was written? Are both versions written in 1951?
As far as we know, the wording "remained in
Doriath" could be in both riders
* --
the one copied in 1951 (LQ1), and the second one copied in 1958 (LQ2).
But with respect to LQ1, maybe, maybe not.
All we know is that the two riders were similar enough with respect to this section that CJRT quoted the second one, adding only that the riders differ only in a few details of wording. And so we don't know if these few details of wording refer to the sentence in question, or something else entirely.
But in any case, the second rider -- which we know has "remained in Doriath" in it -- has been dated by Hammond And Scull as
?Late 1951 - ?early 1952 -- and this time frame seems at least based in part on Christopher
Tolkien's statement that the second rider was written at the same time as
Of Turgon And The Building of Gondolin.
This is the one from 1951 right? I guess Tolkien immediately forgot about it. Or else he would've revised that
Galadriel speech in FotR about
Celeborn.
My guess for F4 would be 1951 as well. CJRT hints that this version may well be associated with the
Grey Annals and the
Excursus on the Languages of Beleriand. He also relates that it was not the last version, in any event. And I wouldn't be surprised if, after the Excursus, Tolkien updated this Appendix with F4.
Odd as it might sound, Tolkien had "finished" (the writing of)
The Lord of the Rings (well mostly "finished" if I'm being pedantic),
before he landed on the true . . . history of
Sindarin!
And with respect to Galadriel's "ere the
fall of Gondolin" I don't know what JRRT was thinking, or not thinking, about this. He had a chance to revise this for the Second Edition in any case, but didn't. Did he remember it was there? I would have preferred he adjust this sentence rather than the (ultimate)
Finrod >
Finarfin thing . . .
. . . especially considering that JRRT's problem with
Finrod (as expressed in PE17 anyway) was that he shouldn't have received a Sindarized name (as a character who had remained in
Aman), and then Tolkien ultimately characterized
Finarfin as a Sindarized name in any case!
That said though, in general, alliteration is nice!
__________
*just to note it here, the rider copied in LQ1 (1951) was lost, and thus its particular wording is only preserved in LQ1.