A variant of Elentári appearing in a note from the 1930s (LR/200). Its initial element is probably tar- “high”, and its second element might be some peculiar genitive partitive-plural form of elen “star”.
Qenya
él
noun. star
éle
noun. star-ray, beam, flashing of [?starry] light
elen
noun. star
elena
noun. star
ellen
noun. star
tar-ellion
feminine name. Queen of the Stars
A word in The Etymologies of the 1930s under the root ᴹ√EL “star” with an unclear gloss “flashing of [?starry] light” (Ety/EL). It also appeared in 1930s notes on Tengwar with the gloss “star-ray, beam” (PE22/23).