Ruin of Doriath - Final Part

[ArcusCalion]

As I posted in the other thread Of the Founding of Nargothrond and Gondolin, the footnote of CT in Beren and Lúthien is troubling in its implications for this text:

A later version of the story concerning the Nauglamír told that it had been made by craftsmen of the Dwarves long before for Felagund, and that it was the sole treasure that Húrin brought from Nargothrond and gave to Thingol. The task that Thingol then set the Dwarves was to remake the Nauglamír and in it to set the Silmaril that was in his possession. This is the form of the story in the published Silmarillion.

I am unsure if there was proof of there being an extant story of this nature before this, but if there was and it was discussed then I apologize for bringing this up again.