The Duskendale Captain is a resident of Duskendale. He serves as the captain of the guards at the town's gatehouse.
A Feast for CrowsEdit
He stops Brienne Tarth when she approaches the twon's gate, seeing the bat of House Lothston on her shield. He recommends his sister as the person to paint over with a new sigil. He then lets her into the city. He presumably also allows Podrick Payne to enter afterwards.