Tonight is Nos Galan Gaeaf, Hallowe'en in Wales, where spirits would walk abroad and the population lived in fear of the Hwch Ddu Gwta, the tail-less black sow, and the Ladi Wen, the white lady (a local spectre, appearing on the lane between my village, Cross Inn, and the hamlet of Rhiwsaeson.)

Nos Galan Gaeaf means The Eve of the Start of Winter, and marked the end of the celtic year and the end of the harvest. Iolo Morganwg notes that the countryfolk would celebrate with the "fiddle and harp with the reaping party", and in Pembrokeshire that farm workers would eat a dinner called ffest yr wrach (the hag's feast.) An old Welsh custom was lighting bonfires, and the youth used see who strongest and daring by jumping through the flames.

Any more customs that I haven't mentioned?