[William Cloud Hicklin]

Mind you that the Sun-tree and Moon-tree featured in "Valinor", almost the first poem Tolkien wrote containing elements of his later legendarium- 1914 IIRC.

Tolkien's imagination often ran to vignettes or tableaux- scenes intensely visualized which then wound up generating tales. You can still see some of this in the LR. It's characteristic of Tolkien's pre-Somme poems that they depict static scenes- snapshots of an Otherworld which as yet has no history, indeed doesn't appear to move in Time at all (except for the characteristic sense of fading, decay and lost grandeur). It's probably fair to say that "Valinor" and other similar poems like "Habbanan" and "Earendel" predate the mythology, in that they were written without any idea of a narrative or 'historical' context: that was built up around them.

My personal theory is that the idea of the history didn't arise until, and arose because, Tolkien invented a *second* Elvish language, Gnomish/Goldogrin. To a comparative philologist, you coudn't have two related languages, descended through many sound-shifts from a common ancestor, without the populations that spoke them having becaome separated and subjected to different influences. The question immediately presents itself, Why? Tolkien's answer was the 'travail of the Noldoli,' the unwritten Gilfanon's Tale. It was of course characteristic of JRRT to envision an end-state and work towards it, but never get there (vide the Voyages of Earendil).