Mabon
Mabon is the autumn equinox station of the modern eightfold year. Of the eight it is the one whose history is shortest, best documented and easiest to state: the name was chosen in 1974 by a named person who has explained why, and the station it names had no name before that and no pre-Christian European festival behind it at all.
The coinage
Aidan A. Kelly was assembling a Pagan-Craft calendar in 1974. Yule and Beltane already had names that sounded like what they were; the solstices and equinoxes did not. He supplied three. For the autumn equinox he looked for a myth that would fit a season of descent and return, and took Mabon ap Modron, “son, son of the mother,” a figure imprisoned and released in the medieval Welsh prose literature. He has published his own account of the reasoning, and of sending the calendar to the editor of a widely read Pagan magazine, from which the names passed into general use 1.
The other two names in that set were Ostara, taken from a nineteenth-century philological inference, and Litha, taken from an Old English month name. See Ostara and Midsummer and St John's Eve.
What Mabon is in the Welsh material
A figure of medieval Welsh prose narrative, taken from his mother when three nights old and imprisoned, and sought and freed in the course of a hero’s task. He has a story, and the story is a good one. He has no season, no date, no harvest and no equinox in any Welsh source.
Behind the literary figure stands something older and better evidenced. The divine name Maponos is attested in Romano-British and Gaulish inscription, which is to say on dated stone, in the strongest evidential class this domain offers 2. A god’s name surviving in inscription and re-emerging centuries later as a character in vernacular prose is a real and striking piece of continuity, and it is the ancient part of this entry.
Correction
Commonly saidMabon is the ancient Celtic harvest festival of the autumn equinox.
No Celtic source, in any language or period, records an equinox festival. None of the four Gaelic quarter-days falls at an equinox, no Welsh source mentions one, and the surviving Gaulish calendar marks neither equinox nor solstice 3. The name’s application to the date is from 1974 and its author has said so in print 1.
Three things stand in place of the claim, and each is better documented.
The first is Maponos, above: an attested divine name on dated stone.
The second is the harvest home, which is a real, abundant and thoroughly recorded British harvest festival. Harvests are not fixed to the equinox, so neither is it: it is held when the last of the corn is in, which varies by region, by crop and by year, with its own customs of the last sheaf, the harvest supper and the harvest lord 3. A festival that moves with the actual harvest is a more interesting object than one pinned to an astronomical instant that has nothing to do with when grain ripens.
The third is the modern practice itself. A festival whose author is alive, whose reasoning is published, and whose date of composition is known to the year is better documented than nearly anything else on this site. That is a strength of the tradition.
The station as an astronomical object
The September equinox is a real instant, computable to the second for any year and any place, and it falls between 21 and 24 September in Coordinated Universal Time in the present era. Marking it needs no medieval warrant. What the sources will not support is the claim that marking it is what the medieval period did. See Solstices and Equinoxes.
Gap in the evidence
Whether the Mabon of the Welsh tales and the Maponos of the inscriptions are one figure is generally accepted on the strength of the name and cannot be demonstrated from the texts, which are separated by many centuries and share no narrative content. The inscriptions give a name and a cult; the tales give a story. Nothing joins them but the word.
References
- Aidan A. Kelly. About Naming Ostara, Litha, and Mabon: Patheos, 2017. https://www.patheos.com/blogs/aidankelly/2017/05/naming-ostara-litha-mabon/ record Accessed 2026-07-29.primary source
Kelly's own account of supplying the three names for a Pagan-Craft calendar, and of their transmission through Green Egg magazine. Cited as a primary document by a named participant, not as scholarship. The post carries a revision date of 21 September 2017.
- Ronald Hutton. The Triumph of the Moon: A History of Modern Pagan Witchcraft: Oxford University Press, 1999. find a copy (catalogue search) recordpeer reviewed
Second edition 2019. The archival study of record for the assembly of the eightfold Wheel of the Year, based in part on the testimony of participants.
- Ronald Hutton. Pagan Britain. New Haven: Yale University Press, 2013. ISBN 9780300197716 recordpeer reviewed
A survey of the archaeological and documentary evidence for pre-Christian religion in Britain, and of what each class of evidence can and cannot bear.
- Ronald Hutton. The Stations of the Sun: A History of the Ritual Year in Britain: Oxford University Press, 1996, xx + 542 pp.. ISBN 0198205708 recordpeer reviewed
The indispensable single book on the British ritual year and its documented customs.