Grýla is originally a giantess.  In Icelandic stories, Grýla is considered the mother of the Icelandic Santa Clauses and Leppalúði is probably their father, but before Grýla  met Leppalúði she was friendly with Bola and Gust and had many giant children with them.

Leppalúði is Grýla’s second or third husband, but there are no legends about how many Grýla’s husbands actually had, although they are usually called two. Leppalúði is an unbelievable lazy blood and although legends tell of their hunting of humans and children together, it is very often also mentioned of him waiting for Grýla to bring him food in their cave in the mountains.

Stekkjarstaur is the name of the Santa Claus who comes to people first, on the 12th of December.   He has pole legs on both feet so it was rather difficult.

Giljagaur is the name of the second Santa Claus to come to people, on December 13. Giljagaur was believed to hide in the cowshed and float the foam from the milk buckets when no one was watching.

Stúfur is the name of the third Santa Claus to come to life, on December 14. Stúfur was the youngest Santa Claus, as the name suggests. He stuffed himself into pans and ate the particles that had burned solid.

Þvörusleikir is called the fourth Santa Claus to come to people, on December 15. Þvörusleikir did like extremely good to lick washcloths and stole into the kitchen when there was an opportunity to get hold of them. Wash was a stick with a blade that was used to stir in pots like a ladle is used today.

Pottaskefill, also called Pottasleikir, is called the fifth Santa Claus to come to people, on December 16. Pottaskefill shoveled and licked the shovels inside the pots.

Askasleikir is the name of the sixth Santa Claus to come to people, on December 17. When the ashes were placed for dogs and cats to lick,  Askasleikir were quick to catch up to them first.

Hurðaskellir is the seventh Santa Claus to come to people, on December 18. Hurðaskellir was a big mess and slammed doors so that people jumped out of their fast sleep.

Skyrgámur  is the eighth Santa Claus who comes to pepole, on the 19th of December. Skyrgámi did found Skyr extremely good and often stole into the shirt barrel and snorted until it was blowing.

Bjúgnakrækir is the ninth Santa Claus. He comes to people on December 20. Bjúgnakrækir was nimble at climbing and often sat up in the kitchen stalls and swallowed sausage (bjúga).

Gluggagægir is called the tenth Santa Claus who comes to people, on December 21. Gluggagægir did lay on a window to peek inside. If he saw something strange there, he tried to hook himself into it.

Gáttaþefur is the name of the eleventh Santa Claus who comes to people, on December 22. Gáttaþefur  has a very large nose and found the aroma of puff pastry far up in the moors, which lured him to farms.

Ketkrókur is the twelfth Santa Claus to come to people, on December 23. Ketkrókur came to town at Þorláksmessa and tried to get a hangikjöt through the chimney.

Kertasníkir is the thirteenth Santa Claus, and the last to be called, on December 24. Kertasníkir came on Christmas day and chased the children to try to get rid of those tallow candles. He thought they were the best delicacy.