Halloween’s origins date back to the ancient Celtic festival of Samhain. The Celts, who lived 2,000 years ago, celebrated their new year on November 1.

This day marked the end of Summer and the harvest and the beginning of the dark, cold winter, a time of year that was often associated with human death. Celts believed that on the night before the new year, the boundary between the worlds of the living and the dead became blurred.

On the night of October 31, they celebrated Samhain, when it was believed that the ghosts of the dead returned to earth. In addition to causing trouble and damaging crops, Celts thought that the presence of the otherworldly spirits made it easier for the Druids, or Celtic priests, to make predictions about the future.

For a people entirely dependent on the volatile natural world, these prophecies were an important source of comfort and direction during the long, dark winter.

To commemorate the event, Druids built huge sacred bonfires, where the people gathered to burn crops and animals as sacrifices to the Celtic deities. During the celebration, the Celts wore costumes, typically consisting of animal heads and skins, and attempted to tell each other’s fortunes.

When the celebration was over, they re-lit their hearth fires, which they had extinguished earlier that evening, from the sacred bonfire to help protect them during the coming winter.

There are several games traditionally associated with Halloween parties. The most common is dunking or bobbing for apples, in which apples float in a tub or a large basin of water; the participants must use their teeth to remove an apple from the basin.

A variant of dunking involves kneeling on a chair, holding a fork between the teeth and trying to drop the fork into an apple. Another common game involves hanging up treacle or syrup-coated scones by strings; these must be eaten without using hands while they remain attached to the string, an activity which inevitably leads to a very sticky face.

Some games traditionally played at Halloween are forms of divination. In Puicíní, a blindfolded person is seated in front of a table on which several saucers are placed. The saucers are shuffled and the seated person then chooses one by touch. The contents of the saucer determine the person’s life during the following year.

A saucer containing earth means someone known to the player will die during the next year, a saucer containing water foretells emigration, a ring foretells marriage, a set of Rosary beads indicates that the person will take Holy Orders (becoming a nun or a priest).

A coin means new wealth, a bean means poverty, and so on.

A traditional Irish and Scottish form of divining one’s future spouse is to carve an apple in one long strip, then toss the peel over one’s shoulder. The peel is believed to land in the shape of the first letter of the future spouse’s name.

Unmarried women were frequently told that if they sat in a darkened room and gazed into a mirror on Halloween night, the face of their future husband would appear in the mirror. However, if they were destined to die before marriage, a skull would appear.

The custom was widespread enough to be commemorated on greeting cards from the late nineteenth and early twentieth centuries.