So main question:
I see on county maps lists of professions; are people who buy parcels in those counties bound by those professions in the list?
Can I be an Astronomer even though it is not on the list of professions for that area, say Hamlet, even if it is not listed as a profession in that county?
Are NPC's limited to the professions on the County list? I am assuming those are the main starting NPC's or only NPC's that can be put down in that county, or are already there, or can I import, employ, or otherwise have an NPC Smithy for example on my parcel, if that profession is not on the list? Or can they show up if I have tons of ore in my stock?