Morrigan (An Mórrígan) is the Irish goddess of war, fate, and sovereignty — a shape-shifter who often appears as a crow or raven. The name combines mór (great) and rígan (queen) — "great queen."
Morrigan is rising slowly as a girls' name — chosen by parents drawn to dark Celtic mythological weight.
Morrigan reduces to one — the number of sovereign battle queen.