Ah yes, your creditor is Dinasi Nansen. He's not a professional loan shark, but he does loan money from time to time, particularly to safe ventures like Valrik's shop. He doesn't know (or at least pretends that he doesn't know) that some of your goods are illegal, but then, he very pointedly didn't ask.
Nansen lives in Procan's Way. His wife is a priestess of Procan, and he's friends with a lot of sailors. It's unclear what he does for a living, but he seems to do pretty well for himself.