Premise: The March of Ancona (Italian: "Marca Anconitana" ) (also Anconetana) was a frontier march centred on the city of Ancona and, then, Macerata in the Middle Ages. Its name is preserved as an Italian region today, the Marches, and it corresponds to almost the entire modern region and not just the Province of Ancona.
Hypothesis: The english translation of Marca Anconetana is March of Ancona