The Celtic festival of Samhain celebrates a time of year when the division between Earth and the otherworld collapses, allowing spirits to pass through.

(LOS ANGELES) This time of year, I often run across articles proclaiming Halloween a modern form of the pagan Irish holiday of Samhain – pronounced SAW-en. But as a historian of Ireland and its medieval literature, I can tell you: Samhain is Irish. Halloween isn’t.

The Irish often get credit – or blame – for the bonfires, pranksters, witches, jack-o’-lanterns and beggars who wander from house to house, threatening tricks and soliciting treats.

Originally published on theconversation.com, part of the BLOX Digital Content Exchange.