Nisse
Nisse (Norwegian tufte, tuftekall, gardvord, fjøsnisse) is the Norwegian farm spirit: small, grey, red-capped, dwelling in barns and stables, especially in Østlandet and Trøndelag. Protects livestock; vengeful if Christmas porridge (rømmegrøt, later risengrynsgrøt) withheld. Shapeshifts. Distinct from Swedish tomte. Christiansen theorized 17th-century Danish introduction; legal tract c.