i Register
In some senses, regionary is marked as historical. Watch for register when choosing this word.
adj
Of or pertaining to an ecclesiastical region.
Not surprisingly, the regionary magistrates do not appear very often in the historians: not every aedile turned out like Vespasian.
noun
Synonym of regionarius (“type of Roman Catholic ecclesiastic”).
A catalogue of monuments and buildings in ancient Rome, produced from a survey.