Vyrthur was a Snow Elf and the Arch-Curate of Auri-El who for millennia sought vengeance against his one-time patron for allowing him to become a vampire. He was the brother of Knight-Paladin Gelebor, the only other uncorrupted Snow Elf known to have survived beyond the First Era.
In 4E 201, Gelebor met the Last Dragonborn and requested that the hero kill Vyrthur in exchange for Auriel's Bow, which was in Vyrthur's possession. Gelebor unknowingly playing right into his brother's hands, for the Last Dragonborn unwittingly brought the Arch-Curate exactly what he wanted: Serana, a Daughter of Coldharbour, a being of the purest evil in Tamriel. Vyrthur sought revenge on Auri-El through the sundering of the sun, which serves as the connection between Aetherius, the plane of the gods, and Mundus, which would thus eliminate Auri-El's influence on Nirn. This was to be achieved through the corruption of Auri-El's bow, accomplished by soaking it in the blood of a Daughter of Coldharbour. He had long ago publicized a prophecy called the Tyranny of the Sun, that was later revealed within the Elder Scrolls, with the intent of drawing such a person to him. Fortunately, Serana and her companion were able to defeat and kill Vyrthur before he could bring his vengeance to fruition.
- For game-specific information, see the Skyrim article.
- Events of Dawnguard