I always wondered about this, and was hoping I could find some opinions here. It was mentioned in the appendix of the Return of the King that Cirdan was going to stay at the Grey Havens until the last ship sailed into the west. When do you think that was? When the term "last ship" was used, I presume it meant the last of the elves to go over sea. Now, most people seem to think that it was very early in the Fourth Age, but I'm not so sure. The Elves in Mirkwood seemed to be pretty content after the war, so I really couldn't see them leaving for awhile. Also, it was occasionally mentioned that there were lost Elven tribes in the East, the Avari, of which much was not known. So, when do you think the last of the Elves left, and who were they?