Ser dy Sanda is secretary-tutor to Royse Teidez, including instructing him in swordsmanship. He had ridden as a lay dedicat of the Son's Order in his youth. Dy Sanda was murdered after Teidez and Iselle arrive in Cardegoss, probably in a move instigated by Dondo dy Jironal to gain more influence over Teidez. His soul was taken up by the Son of Autumn. He was survived by an older brother.
Ser dy Sanda is stern and conscientious, but seems defensive about Cazaril's title of castillar, insisting on his precedence at all opportunities.