Mafia 44. Time of Troubles

but the town marksman also has a spear

Okay, so Ney could be a Cossack. That's a possibility. Then Spear definitely mafia, and the murder of the second mafia member didn't happen yesterday, for example, because Ivan protected him. It's unlikely, but it's worth considering.
Alright, I'm going to sleep, I'll think about it tomorrow).