Yavanna's Chosen

[Ancalagon'sFire]

Indeed, of all the Istari, one only remained faithful, and he was the last-comer. For Radagast, the fourth, became enamoured of the many beasts and birds that dwelt in Middle-earth, and forsook Elves and Men, and spent his days among the wild creatures. Thus he got his name (which is in the tongue of Numenor of old, and signifies, it is said, "tender of beasts").

Unfinished Tales - The Istari

There is no hint of an explanation of why Yavanna's evident desire that the Istari should include in their number one with particular love of the things of her making could only be achieved by imposing Radagast's company on Saruman; while the suggestion in the essay on the Istari (p.407) that in becoming enamoured of the wild creatures of Middle-earth Radagast neglected the purpose for which he was sent if perhaps not perfectly in accord with the idea of his being specially chosen by Yavanna.

Unfinished Tales - The Istari

It is said that of all the Istari Gandalf was the only one to have remained faithful to the task set by the Valar. I wonder then was Yavanna's choice of Aiwendil specific to her purpose and if so did he in fact remain faithful to her and ultimately succeed in Middle-Earth?