Finnish Folklore Wiki

Liekkiö is a ghost or a soul of a murdered child. Liekkiö didn't do any harm, but sometimes distracted travelling people by crying and whining. In some sources liekkiös looked like flames, similar to will-o'-the-wisps.

In his list of the ancient Finnish gods, Mikael Agricola described Liekkiö to be the lord of grass, roots and trees.

"Lieckiö Rohot jwret ja puudh hallitsi ja sencaltaiset mwdh."
"Liekkiö controlled grasses, roots and trees and other things like that."