May 9th - "Roman feast day of Lemuralia, when the spirits of the dead walked the earth."
Given that the other nights when the dead traditionally walk (Walpurgis/Beltane and Samhain/Hallowe'en) are at key points in the year, i.e. the changing of the seasons, why is there another night of the dead in the calendar? Is it most likely that this was part of the Roman calendar and was imposed on the Celts, then stamped out by the Christian church?
(This is me playing with my new book - I'll grow tired of it eventually!)