The will-o'-the-wisp can be found in numerous folk tales around the United Kingdom, and is often a malicious character in the stories. In Welsh folklore, it is said that the light is "fairy fire" held in the hand of a púca, or pwca, a small goblin-like fairy that mischievously leads lone travellers off the beaten path at night. As the traveller follows the púca through the marsh or bog, the fire is extinguished, leaving them lost. The púca is said to be one of the Tylwyth Teg, or fairy family. In Wales the light predicts a funeral that will take place soon in the locality. Wirt Sikes in his book "British Goblins" mentions the following Welsh tale about púca.