Blah .... I wrote a post, thought i posted but apparently not ... Again then ....
As far as Galadriel goes, she also is credited to test herself against the temptation of the one ring, being able to resist. Her ring, One of the three given to elves, was about the defense and preservation of her realm. She was of the chief elves when they left for middle earth in FA, though her party did not take part in kinslaying. And since most of her features are in sillmarilion, i might forget things though it is the one i love most.
Glorfindel where indeed two different elves, whom story at some point was added together to make one. I cant remember more cause i just woke up cause my son fell off bed at two in the morning, thus my mind is sleeping, as i will be doing so soon hehe