furthermore, you are the marshal, and I am 99% sure of it. Much has already been said on this topic, so I will not repeat myself.
therefore, you must be hanged.
and now, follow the train of thought: there are 3 people left: the moneylender, the blacksmith, and the mafia. The blacksmith blocks the mafia, the moneylender doesn't act, and on the next day, the blocked person is hanged – the town wins, thanks to me and the blacksmith.