The Rantin’ Raven: Who Was Mabon?
In the 1970s Aidan Kelley tagged the Autumn Equinox with the name Mabon, and it took in large part because Starhawk repeated it in her hugely popular first book, The Spiral Dance. Theres still a lot of debate over whether thats an appropriate name for it, mostly because we dont know much about the persona behind the name. Quite a few people believe the problem is simply that the myths dont support the timing at the Autumn Equinox, but I think they do.
Unlike most of our Celtic names for Sabbats, Mabon is Welsh, meaning simply, Son. In full, Mabon ap Modron, Son, son of Mother.
H.R. Ellis-Davidson quotes the Venerable Bede as translating Modron as the Mothers plural. Modern translators give it as the Mother singular. Linguistic evidence may well support the plural interpretation, for although Mabon ap is unequivocally Welsh, Modron may not be: in Germanic languages the singular of Modron becomes Modr recognizably mother. Suddenly we have, not as was always believed a corruption of the Latin Matrona, but good Germanic, most likely Saxon. All very scholarly, but it doesnt tell us much about Mabon, does it?
http://www.patheos.com/blogs/agora/2015/09/the-rantin-raven-who-was-mabon/