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For there were other Elves of various kind in the world; and many were Eastern Elves that had hearkened to no summons to the Sea, but being content with Middle-earth remained there, and remained long after, fading in fastnesses of the woods and hills, as Men usurped the lands. Of that kind were the Elves of Greenwood the Great; yet among them also were many lords of Sindarin race. Such were Thranduil and Legolas his son.