Beaten paths are for beaten men.
One of the infamous Tuatha Dé Danann (Tribe of Danu), Morrigan is a staple of Celtic lore. A goddess of Strife, Fertility and Battle, she can appear as either a single goddess or three (the Celts love a good trinity).
Her forms are:
Badb or Mache = Crow
Nemain = Frenzy
Morrigan = Phantom
And she can appear as a young woman, middle age or old. She is a goddess of power and one not to be trifled with.