Morrigan

Morrigan was a famous Irish witch, notable for being an Animagus who could turn into a crow.

Morrigan was an ancestor of William Sayre, who nicknamed his daughter, Isolt, "Morrigan" due to her affinity for all things natural when she was young.

Behind the scenes

 * According to Irish mythology, the Morrígan ("phantom queen") or Mórrígan ("great queen") was a figure associated with fate, especially with foretelling doom and death in battle — in this capacity, shw would take the shape of a crow, flying above the battlefield.

Appearances

 * Pottermore