Arianrhod
Arianrhod is the mother aspect of the triple Goddess.
The names of the aspects change per myth however.
Arianrhod means Silver Circle (Arian meaning
`silver',
and Rhod meaning `wheel' or `disc'). She was
Gwydions
wife, and mother to both a sun god and a god
of darkness.
In the later Arthurian Legends her place is taken
by Morgause,
Arthurs sister.