A bronze sculpture from Muri, near Bern in Switzerland shows a large bear facing a woman seated in a chair, with a small tree behind the bear. The woman seems to hold fruit in her lap, perhaps feeding the bear. (Deyts p. 48, Green pp. 217–218). The sculpture has a large rectangular bronze base, which bears an inscription. (CIL 13, 05160)
To the Goddess Artio (or Artionis), from Licinia Sabinilla. If the name is Gaulish but the syntax is Latin, a dative Artioni would give an i-stem nominative *Artionis or an n-stem nominative *Artio. That would perhaps correspond to a Gaulish n-stem nominative *Artiu.
Her name is derived from the Gaulish word artos, bear (Delamarre 2003 p. 55-56), from Proto-Celtic *arto-, from Proto-Indo-European *h₂ŕ̥tḱos, bear. A Celtic word may also be the source for the name Arthur.