"She is usually a triple-aspect goddess, referred to, by the Romans, as Deae Matres or the Matronae, and depicted as three seated ladies often holding their associated attributes. In Britain, these tend to be babies, fruit and loaves emphasising her role a Goddess of Fertility in both the human and agricultural world. There was a cult centre in the Cotswolds, probably at Cirencester, and another somewhere in the Hadrian's Wall region of the North....

Most famous, however, is her link with Morgan Le Fay of Arthurian romance. In these chivalric tales, this lady is described as a healer who lived on the mystical Isle of Avalon with her nine sisters, like the Greek Muses. She had a triple aspect with the Queens of Northgalis (North Wales) and the Wastelands. Her epithet clearly shows her immortal origins, though she later had dark overtones attached to her through deliberate confusion with the Irish War-Goddess, the Morrigan."

Britannia.com

According to Encyclopedia Mythical, he is a "welsh goddess, daughter of Avalloc, derived from the Celtic goddess Matrona. She is regarded as a prototype of Morgan (from Arthurian Legend)."

"Modron." Encyclopedia Mythica from Encyclopedia Mythica Online. [Accessed June 01, 2007].

Wikipedia inludes the information that "she is derived from the Gaulish goddess Dea Matrona. [And] She was the mother of Mabon, who bears her name as 'Mabon ap Modron.' In the Welsh Triads, Modron becomes impregnated by Urien and gives birth to Owain and Morvydd."

"Modron." Wikipedia, The Free Encyclopedia. 22 May 2007, 12:49 UTC. Wikimedia Foundation, Inc. 1 Jun 2007 .