[Mithadan]

Arvegil145, thanks for providing this linguistic information and linking it to a part of the mythos that is arguably undecided. As an aside, if you know how to get back issues of Parma Eldalamberon (I'm most interested in PE 17), please let me know.

Whether 1930s Elulindo is Celeborn is, at best, an open question. More on this in a moment.

Celeborn Gildírion from the late 1960s is more interesting. First is the comment that the name is a "Sindarized form of his father's Telerin name Gilitīro." The implication that his name was, originally, Telerin, can be coupled with the late UT version suggesting Celeborn lived in Alqualondë. "Celeborn" itself was also a Sindarized version of Teleporno. This seems to reflect the later version of the tale where Celeborn and Galadriel, at least, meet in Valinor. Whether the version of the story where the couple take ship independent of Fingolfin's march into exile was JRRT's final decision remains uncertain. Nor does this firmly establish that the earlier version(s) of the story (Celeborn was a Sinda, "kinsman" of Thingol, possibly his nephew, a prince of Doriath, met Galadriel in Beleriand) was entirely rejected.

Circling back to 1930s Elulindo, Galadriel did not appear until LoTR, so I believe that Celeborn may not have been conceived of in the 1930s.