A name for Tom Bombadil in Lord of the Rings drafts from the 1940s, glossed “Eldest” (TI/125). It seems to be yáre “former days” (or some variation thereof) used as a name.
Qenya
yár
noun. blood
yáre
masculine name. Eldest
yáre
noun. former days
yára
adjective. old, ancient, belonging to or descending from former times
yárea
adjective. olden
yára-noldorin
proper name. Old Noldorin
yára túro mante ilqa masta ha mé·ne úmahtale
old Túro’s eating of all the bread was a nuisance to us
yalúmea
adjective. olden
yór
noun. blood
A noun for “blood” in The Etymologies of the 1930s from the root ᴹ√YAR of the same meaning (Ety/YAR). Tolkien considered changing the root to ᴹ√YOR and the Quena form to yōr (EtyAC/YAR).
Conceptual Development: The word ᴱQ. hari “blood” from the Early Quenya Grammar (EQG) of the 1920s might be a precursor. It in turn was probably related to earlier ᴱQ. hara(nda) “flesh-meat” from Qenya Lexicon of the 1910s (QL/39).
Neo-Quenya: Since Tolkien changed its cognate from [N.] iâr to [S.] agar, this Quenya word is probably no longer valid, and for purposes of Neo-Quenya I recommend using the later word Q. sercë “blood” instead.