Original: It was named in April 2007IAUC 8826: Satellites of Jupiter and Saturn April 5, 2007 (naming the moon) after Sköll, a giant wolf from Norse mythology, son of Fenrisulfr and twin brother of Hati.
Simplified: It was named in April 2007 after Sköll, a giant wolf from Norse mythology, son of Fenrisulfr and twin brother of Hati.