The Matres, Matrae, and Matronae are often qualified by some local name.

Deities of this type appear to have been popular in Britain, in the neighbourhood of Cologne and in Provence.

In some cases it is uncertain whether some of these grouped goddesses are Celtic or Teutonic.

It is an interesting parallel to the existence of these grouped goddesses, when we find that in some parts of Wales 'Y Mamau' (the mothers) is the name for the fairies.

These grouped goddesses take us back to one of the most interesting stages in the early Celtic religion, when the earth-spirits or the corn-spirits had not yet been completely individualised.