A bunch of questions

[gardibolt]

2) Put them in regions that aren't mostly catholic and/or that have heresy present. Let them convert those over to catholic, which will raise their piety. Use them to hunt down heretics and witches.

I've done this a bunch of times and all it does is make my priests turn into heretics, who I have to kill with my cardinal. Once he dies of old age, I'm in deep papal trouble. I've never been offered a Theologian's Guild so that doesn't help.

For conversion, do you have to be in the city, or just anywhere in the territory?