> This might be related to Welsh anner (from Brittonic
> *andera) "heifer", but Gaulish had a root andero- meaning "below,
> infernal"
I forgot to add that some see Basque andere ("woman") as a loan from
Celtic, as opposed to the various related Celtic words being derived
from Basque. See Xavier Delamarre's Dictionnaire de la langue
gauloise (under the entry for anderos).