(From http://boards.straightdope.com/sdmb/showthread.php?t=342873)
Happy to oblige.
“Original” may not have been the best word to use; however, I would still maintain that Sauron originated in Tevildo. The series Tevildo > Lord of Wolves > Thû > Gorthaur > Sauron doesn’t involve any major discontinuities in rôle or personality. I was extremely pleased to see that Jackson depicted the Eye of Sauron as a cat’s eye in the first movie, which gave me hopes of great things to follow - unfortunately, these hopes were to be painfully dashed.
Tevildo is described as speaking “by the evil spirit that was within him”. I don’t recall any reference to this “evil spirit” as being a definite “enchantment”, or coming from Melko(*) in any other way. I would also note that Sauron is not one of the original Ainur that joined with Melkor in the Great Song, but was corrupted by him “in the beginnings of Arda” (published Akallabêth) - a process that, at the angelic level of the Ainur, might be said to involve enchantment.
- OK, Tinúviel does address Melko as “Morgoth” in a draft of the story, but he’s still “Melko” in the main text, and the etymology of “Morgoth” at this stage of the development of the overall narrative is also debatable.