I don't think there should be a state for "The Emrate Steads of Testificate", but there can be a greater region containing that area and stretching further north and east to the other borders, and it could be called Enod Stead and be a part of the UBSR managed by you if you develop it.
South Riverfield, I assume is the municipality name and not a region name? If so, ok.
Abbreviations cannot be in municipality names, so in Old Amazonis, the municipalities would have to be "Aeridanish Old Amazonis" and "Bielosian Old Amazonis". Smjjames was thinking of using another name than Amazonis, so maybe you might want to call it something else than Old Amazonis though?
Smjjames approved, will hopefully be in the next map. I won't include the tentative names, though... I think.