Caillagh
(Gaelic for Witch) (fem.)~ I love this name for the Irish nationality and because I'm a witch.
The Irish word that this comes from is cailleach, which is Irish for, literally, "old woman." In Irish and Scottish tradition, the Cailleach is the aspect of the triple-faced goddess Bríd (Brigid), that is born on Samhain (Oct. 31) and rules the winter months.