Fyglia

(FIG-lee-ah)

In Iceland there is a type of flesh-eating REVENANT known as a fyglia ("following spirit") who has the odd behavior of climbing onto rooftops and kicking shingles loose when looking for its victims. To destroy this vampire it must first be captured, beheaded, and then reburied with the head positioned under its body.

Source: Dillon, Winter in Iceland, 272