Modern Day Mabon
Okay, so Modern Day Mabon came about during the Neo-Pagan movement of the 70's by a man named Aiden Kelly. It's largely celebrated by the Wiccan community and got it's foothold in the United States, but as said in the previous post, it can be found in almost any tradition. In America, September has always had a very holy feel, so it makes sense that we would accept something like the celebration of a harvest during the equinox.
The term was coined after a Welsh, or maybe even Saxon, deity or hero who is the god of the light, Mabon ap Modron. However, this is highly debated to even true among many historians as no one can find any proof that people even worshiped someone named Mabon, however, his name does worship to "Son of the Mothers", so it's possible, but loose. Some believe it was just Kelly's attempt to find a "Pagan" name for this holiday since there really isn't anything known about the history of the Autumn Equinox and what it was really called. This may come as a surprise to many in the community who fiercely stick to the Yearly Wheel, but that's a more recent invention.
The biggest issue are similar holiday's that have been practiced for century's like the British Harvest Home. The thing that seems to keep Mabon alive as a name is more that it just SOUNDS Pagan, Midsummer and others don't.
Now, the Autumnal Equinox does trace back to the 16th century, so we do know that this practice was real and what it stood for, but it's time varied from tradition to tradition was really just a Harvest Celebration. Which was celebrated whenever they harvested their fall crops. It being on the actual Autumnal Equinox was, again, a more modern improvement and mainly due to a the invention of the calendar.
It's simply a rose by any other name scenario. So whatever you choose to call it, enjoy it. Have a slice of pumpkin pie for me.
So who is Mabon ap Modron?
As I said above he could either be a Welsh or a Saxon king that was represented as more god-like than human and highly coveted by his people and losing his name to what is only now known as The Mothers. The Mothers are a very, very old and long forgotten part of Saxon history which is really only described as the Great Mother archetype we see in almost any religion, including Christianity.
Now there is only one myth that includes Mabon's name and that involves King Arthur and The Wooing of Olwen. He was taken from his mother's bedside and then rescued only to be imprisoned by his uncle until he was let out to participate in this Wooing.
However, in this article that I'm siting below, it seems we may have found out who this Mabon may actually be, where he came from, and what kind of a Mother he was born of. Click the link below for more interesting lore on the Man who gave his Name for this holiday.