Alatar - One of the original three Wizards selected by the Valar for the journey from Valinor to Middle-earth (the other two being Curumo and Olórin - Saruman and Gandalf). When these three had been chosen, Yavanna selected Aiwendil (later called Radagast) to join them, and Alatar selected his friend Pallando to travel with him into the Outer Lands.
Alatar and Pallando arrived in Middle-earth dressed in sea-blue. For this reason, they were together given the name Ithryn Luin, the Blue Wizards. With Saruman, they journeyed into the far east of Middle-earth, but while Saruman returned to the west, Alatar and Pallando did not. Of their fate, we know almost nothing2.
Pallando - A Maia of the people of Oromë and a friend to Alatar, Pallando was selected by the Valar as the last of the five beings to be sent eastward across the Great Sea to become Wizards. Alatar and Pallando were together known as the Ithryn Luin, the Blue Wizards. They wandered far from the northwestern shores of Middle-earth, exploring the distant eastern lands. Their fate is never told, but it seems that, like Saruman, they fell into darkness, and Tolkien hints that they were responsible for the founding of strange cults in distant lands.
Questions of Canon
It should be noted that all our information about the Blue Wizards come from sources of doubtful canonicity. Indeed, the name Alatar only appears on a page of notes quoted by Christopher Tolkien in Unfinished Tales. Other (similarly rough) sources name 'Alatar' and his companion as Morinehtar and Rómestámo, and suggest that they arrived in Middle-earth long before the other Wizards, as early as the Second Age. In summary, the question of the two Wizards left unnamed in The Lord of the Rings doesn't seem to be one that Tolkien came close to resolving in any detail.
1. The name Alatar can be interpreted (somewhat awkwardly) as 'after-comer'. If this is correct, it may be a reference to his being selected as the second Wizard, after Curumo (Saruman). It might equally have been given to him after his arrival in Middle-earth (he was said to have arrived after Saruman), but Tolkien specifically states that neither Alatar nor Pallando had a name in the known regions of Middle-earth - in this case, Alatar must be viewed not so much as a name, but rather as a simple description.
Alternatively, Alatar's name might be connected to the Quenya alata, 'radiance'. If that's the case, it would have been his name in the West, rather than in Middle-earth, where we would expect him to have received a name in the Sindarin tongue.
If we assume that the Pallan- element in his name is related to the common palan-, meaning 'far' or 'distant', then Pallando can be interpreted as either 'Far(-travelling) One' or (much less likely) 'He who comes from afar'.
2. Tolkien tells us 'What success [Alatar and Pallando] had I do not know; but I fear they failed, as Saruman did, though doubtless in different ways; and I suspect they were the founders or beginners of secret cults and 'magic' traditions that outlasted the fall of Sauron.' (The Letters of J.R.R. Tolkien, No. 211).
playing with looks with the Game of Thrones game.
Silmarillion by: JRR Tolkien
pic by: me