“Tolkien's The Lord of the Rings and His Concept of Native Language: Sindarin and British-Welsh”. Tolkien Studies (West Virginia University Press) (7):
com/books?id=fiGQDwAAQBAJ&pg=PA92. "Quenya and SIndarin are later versions of Qenya and Gnomish. SIndarin developed from Gnomish/Noldorin, even though,