I'm confident in knowing who the jailor is and I am leaning towards mafia knows who they are as well and are keeping the jailor around because the jailor is, unintentionally, playing to their cards.
So, here's what I would propose.
If anyone has been jailed, they
1) say they've been jailed
2) say what night(s) they've been jailed
3) say whether or not the jailor revealed their identity.
I am NOT asking you reveal the jailors identity.
If anyone opposes this idea, that's fine, I just ask for your reasoning with the understanding I may pushback.