What is "arduinna"

In Celtic mythology, Arduinna (also Arduina, Arduinnae or Arduinne) was the eponymous goddess of the Ardennes Forest and region, represented as a huntress riding a boar (primarily in the present-day regions of Belgium and Luxembourg). Her cult originated in what is today known as Ardennes, a region of Belgium, Luxembourg and France. She was later assimilated into the Gallo-Roman mythology of goddess Diana.