Q. Isilmo [þ] m.
Second child of Tar-Súrion
and younger brother of the second ruling queen of Númenor Tar-Telperien
; his son Tar-Minastir
inherited the throne after the queen died without children (UT/220). His name seems to be a compound Isil
“moon” and the agental suffix -mo
Conceptual Development: Very earlier in Tolkien’s legendarium, ᴱQ. Isilmo (QL/43) was given as the name of the son of ᴱQ. Isil (later ᴱQ. Inwe, Q. Ingwë).