Why is the Wolf important to Norse mythology and Celtic lore?
According to Norse mythology, the wolf symbolizes victory when rode in battle by Valkyries or Odin the father of all the gods. Valkyrie a female figure decides who lives and who dies in battle. The monstrous wolf Fenrir is the son of Loki and attempted to kill Odin during Ragnarok, but was killed himself by Odin's son Víðarr. Often accompanying Odin, Geri and Freki are ravenous greedy powerful wolves. Hati Hróðvitnisson is a warg wolf that attempts to snatch the moon as it travels across the night sky and Sköll also a warg wolf that attempts to snatch the Sun as it travels the day sky being pulled by horse and chariot. As you can see these Norse wolves each have a significant role to play in Norse mythology.
According to Celtic lore, the wolf symbol is a source of lunar unseen power including uncommon knowledge and uncanny intuition. The Celts befriended the wolves for both hunting and protection to take advantage of the wolfs senses.