Archmaester Vaellyn, also known as Vinegar Vaellyn is a member of the order of the Maesters, and serves at the Citadel in Oldtown. He is known for his sharp tongue. His ring, rod and mask are made of bronze, signifying his speciality in the subject of the heavens.
Vaellyn holds a particular distaste for Archmaester Marwyn, possibly because of conflicts in their two realms of studies. He gave Marwyn the nickname Marwyn the Mage, but was angry when it spread around Oldtown and cottoned on. He looks down on the study of magic and the occult.
At some point Vaellyn refused to give Pate his bronze link, and the traumatic experience scarred pate to the extent that he wouldn't try for another link for two years.