They were both the same Glorfindel. When Elves die there their fear (spirits) go to the halls of Mandos in Valinor. There they stay until they can be re-housed in a new hroa (body) based on the fears' remembrance of it. If they were naughty little Elves while "housed" they may have to stay longer in Mandos. Some Elves, such as Feanor or Mìriel (Finwes' first wife) never returned. Glorfindel was the only Elf allowed return to Middle-earth when he was re-housed (as far as I can remember). The rest had to stay in the West.
__________________
"Come away, O human child!/ To the waters and the wild/With a faery hand in hand,/ For the world's more full of weeping than you can understand."
|