I'm changing the Salakian Empire's name to be more reminiscent of the Roman empire. I know the capital's name translates into, for example, Ardea in the sea. Would the Latin translation be Ardea aikuoris (gen./loc.) or Ardea aikuore (abl.)? If my understanding of Latin is correct, the Empire's new name, keeping with the above example, would be Imperium Ardeís aikuoribus, either way.