Could the Three be made again?

[Gwaihir the Windlord]

Am I right in saying that you haven't yet read the appendixes, Arwen? I suggest you do. It'll explain your question, plus a lot more; it's also got a few interesteing odds and ends that are well worth reading, a timeline of the history of the second and third ages, and the royal lines of Rohan, Gondor, and Arnor.

To answer your question... O

One thought about the rings, didn't Sauron help the elves develope the craft? He did not actually touch the rings, but he was involved somehow. I think that somewhere the some elf says that the elves will never be tricked into helping Sauron again. Does that have anything to do with the rings?

Sauron could, in the days of the early Second Age when the Rings of Power were made, change form and if he wished appear charming and noble. The Elves in those days did not know who he was, believing him to be charming and noble, as he appeared.
Tricking the Elves of Hollin like this, he soon gained their trust, and aided them much in the work that went into creating the Rings of Power. He proved a valuable aid in the forging of the Lesser Rings. Then, when Celembrimbor and his craftsmen proceeded onto the Rings of Power, Sauron helped them forge the Seven and the Nine. That's why his influence fell on them, and they became filled with evil.
The Three were the only Rings that Sauron never touched; he helped Celembrimbor work out how to make them, but he didn't play a part in their actual forging. This is why they don't contain any traces of evil in them.

. One theory is that Tolkien goofed, used the same name twice, and then made up an explanation to cover it.

Somehow I don't think so, mate. Plenty of names have occured twice in ME; Tolkien would need no explanation to cover up the simple recurring of a name. Anyway they were both the same person from the start -- golden-haired, and very powerful.
Perhaps Glorfindel's love for Middle-Earth was stronger than usual, or somehthing like that.