Wiktionary
andarta
n. (context Celtic mythology English) A Celtic goddess of warriors.
Wikipedia
Andarta
In Celtic polytheism, Andarta was a warrior goddess worshipped in southern Gaul. Inscriptions to her have been found in southern France and in Bern, Switzerland. She may be related to the goddess Andate, identified with Victory in Britain according to Roman historian Cassius Dio. Like the similar goddess Artio, she may have been associated with the bear.