A Gallic goddess associated with midwifery and childbirth. She is principally known from clay figurines discovered at Toulon-sur-Allier, France and inscriptions found at Trier, Germany; Avenches, Switzerland and Mont Afrique, Côte d'Or, France.

The figurines depicting her generally represent a goddess with infants at her breast. In these statues she is often accompanied by a small lapdog.

The etymology of this goddess' name is uncertain but it may be related to the proto Indo-European *-wet- (to turn to, to be acquainted with) which gives rise to the proto-Celtic wet-o (turn) and the goddess' name might be interpreted as: 'She who is Acquainted with [childbirth]' or She who is Turned to [at Childbirth]. This is given a little more credence in that the proto-Celtic form wetsi represents a young domesticated animal (generally calf or pig) but it might originally have referred to a child.