A Deluded Chevalier

A Deluded Chevalier is a side quest in Dragon Age: Inquisition

"Documents found in Costeau's camp mention a chevalier named Auguste who is working for the Freemen. He was last seen at Argon's Lodge in the Emerald Graves."

Acquisition
Acquired by examining a map found in the Veridium Mine during A Fallen Sister.