An earlier name for S. Eluréd (LR/147). It appeared in The Etymologies containing Ilk. boron “steadfast”, but the name were rejected, probably at the same time as the name of his brother Ilk. Elbereth (Ety/BOR). Its initial element might be el “star”.
Sindarin
Elboron
Elboron
Elboron may mean "Enduring Star", from elen ("star") and boron ("long-lasting, enduring").