What of Curumo?

[Legate of Amon Lanc]

Originally Posted by Eönwë

It is quite a strange idea, because there are aa fe loose threads left in LOTR, such as "What happened to the Ents?"(and the Entwives too for that matter). "What happened to the true Aulean dwarfs?" and so on. But he leaves personal things unsaid, for example about Legolas and Gimli, and where their adventures led them. Most of the personal stories are left where they are at the end of the story, with just a hint o a happy/bad ending. But we don't ever find out much about Radagasst te brown, and I don't think even Tolkien knew what happened to the Blue Wizards (Alatar and Pallando).

He definitely said he did not know (see Unfinished Tales, he only says he "is afraid they failed"). Concerning Radagast, well, he was not that much of an important character, and since he was in his retreat among the wild animals even during the times of the War of the Ring and all the epic stuff and the only thing that ever drove him out of there (as far as we know) was a vocation from Saruman connected with the threat of the Nine, one should not be even surprised that we don't know more about what happened to him later: he, presumably, remained where he was all the time.
And concerning Gimli and Legolas, we are told quite enough about them in the Appendices, about their journeys together and Gimli's work with the Dwarves in the Glittering Caves, and in the end, they both left, Legolas built a ship and they presumably both reached Eressëa.