Dear G; Tried to find you...

[Garen LiLorian]

I choose to believe that Glorfindel was there with them

That'd make sense, and I had forgotten Formendacil's excellent point, that

he came to Gondor in the group that included the elves of Lothlorien, as well as the Elves of Rivendell.

This at least gives Glorfindel an alibi when all the war heroes sit around afterwards telling stories. I still think it is odd, however, that he alone of all Elves (mentioned, anyway) reincarnates with the express purpose of fighting Sauron, yet he is practically nowhere to be found in the great battles.