Quill is a Knorthrandon cadet at Tentir. He is one of Jame's ten-command. His mother had wanted him to become a scrollsman, hence the name. He appears to show some of those traits, recalling a song about a randon with nightmares to show empathy for Niall's nightmares. When the ten-command is discussing Honor's Paradox, Quill knows both it's history and definition.
Quill is described as "sharp", and sometimes speaking wisely.
↑To Ride a Rathorn, "Chapter V: A Length of Rope", I — "That was Quill, thought Jame, the one whose mother had wanted him to become a scrollsman, hence the name."
↑To Ride a Rathorn, "Chapter X: Battles Old and New", I — "Quill's face had twisted with concentration. 'Isn't there a song about a randon who shrieked all night long in his sleep before a battle, until his Kendar had to stuff tufts of wool in their ears? The next day he fought like a demon, but in silence because he was too hoarse to make a sound.' "
↑Honor's Paradox, "Chapter I: Songs in the Night", I — " 'And so became entangled in Honor’s Paradox,' added Quill, so named because his parents had wanted him to become a scrollsman. 'Where does one’s honor lie, in following orders or in oneself?' "
↑Bound in Blood, "Chapter V: Fractures", II — " 'Ran Awl is all right,' said Quill judiciously, […] 'There seem to be distinct groups within that house with different personalities, as if they aren't all bound to the same Highborn.' Sharp Quill. That hadn't occurred to Jame,"
↑To Ride a Rathorn, "Chapter XII: Unsheathed", I — " 'They'll start at the pool,' said Quill wisely. 'I hear it crashed through the thorns, so there'll be a blood trail, at least at first.' "