Who is Civil Bresinga from The Golden Fool and what is their importance?

Civil Bresinga is Dutiful's best friend and confidant. Everyone thinks Civil is a spy, but Dutiful trusts him. Civil has the Wit. Civil is a spy for the Piebalds, but he is forced into this role to protect his mother. When he learns his mother is raped and imprisoned daily in her house by the Piebalds, he breaks off the deal. He saves the day when he makes a speech to the Old Blood about how the Queen and Dutiful accept and love him as a Witted One.