Gáttaþefur aka Door Sniffer turns up on the 22nd and hangs around until the 4th.

Door Sniffer comes to town on 22 December. He is easily recognized by his huge nose. He loved the smell of cakes and lace bread – sometimes called leaf bread – when they were being prepared for Christmas, and always tried to steal one or two.

Eleventh was Door Sniffer,
a doltish lad and gross.
He never got a cold, yet had
a huge, sensitive nose.

He caught the scent of lace bread
while leagues away still
and ran toward it weightless
as wind over dale and hill.