Нет неведения и нет прекращения неведения.
The Elvenking is never named within The Hobbit; like the Mayor of Lake Town (who never does acquire a name), he is always simply referred to by title throughout. Not until The Lord of the Rings is he given a name, Thranduil, and made father of the elven member of the Fellowship, Legolas Greenleaf. Even in The Lord of the Rings most of what we learn about him comes from Appendix B: ‘The Tale of Years’; he never actually appears in the main story. His name is not easily explicated but seems to be in early Sindarin (that is, Gnomish/Noldorin, later rationalized as a dialectical form), and to contain the same element as the place-name Nargothrond: Narog + othrond, ‘fortified cave by the river Narog’ [Salo, p. 386; HME XI.414]. The thrand/(o)thrond element, meaning fortified cave (ost + rond), fits very well with the character as described in The Hobbit, where the chief thing we know about him is that he’s a king dwelling in a cave; the –uil or –duil suffix might relate to dûl (hollow), but more likely links to drui, drû (‘wood, forest’) [Gnomish Lexicon, page 31]. If so, a possible gloss would be ‘(One who lives in) a (fortified) cave in the woods’.
John D.Rateliff 'The History of Hobbit'