If your village with your first church is nobled, you can rebuild it in any village that does not have a church, if there already is a church in your village and you wish to put a first church in it then you can demolish your church to make room for your first church.One more question:
can I build First church once more time if:
1. I have no village with the first church (it has been conquered, for example).
2. I have one or more villages with "common" churches (non-first).