Qenya cognate of G. Gilthavran, a location only mentioned in the Gnomish Lexicon from the 1910s (GL/38). Since the first element of its Gnomish equivalent is G. giltha “white metal”, the initial element of the Qenya name may be related to its cognate ᴱQ. ilsa “silver”. The etymology of its second element is less clear. The Qenya name was first written as Ilwaran with a w, which hints that its initial element may at first have been related to the root ᴱ√ẆAÐA “dwell” via the (rejected) primitive form ᴱ✶gu̯ara-. After the revision, it is possible Tolkien conceived of the second element being derived from primitive ᴱ√MBARA “dwell, live”.