Of the Sindar

[Elvellon]

A couple contradictions I noticed, which I've underlined for emphasis. First up:

§28 Therefore Thingol bethought {[}him{]} of arms, which before his folk had not needed

Does this not contradict this bit of text from Of the Silmarils and the Unrest of the Noldor a few chapters ago?

§52a .... Now the Quendi had possessed weapons in Middle-earth, but not of their own devising. They had been made by Aulë and sent as gifts by the hand of Oromë, when it became known to the Valar that the Quendi were beset by prowling evils that had discovered the places of their dwelling beside Cuiviénen; and more were sent later for the defence of the Eldar upon the Great March to the shores of the Sea.

Also this statement in The Coming of Denethor:

.... of the wanderings of that people, the Nandor, little is now known. Some, it is said, dwelt age-long in the woods of the Vale of the Great River, some came at last to the mouths of Anduin, and there dwelt by the Sea ....

is contradicted later in the same paragraph by this:

OS-MT-09.5 <GA, Note on the ‘Guest Elves’ {the}The Nandor had turned away, never seen the Sea or even Ossë, ...

You could perhaps change "Nandor" here to "Green-elves", since it is only said that "some" of the Nandor dwelt by the Sea, and we can infer that the group who became the Green-elves were not among those who "turned aside and wandered southwards".