FTP, name this war goddess, also known as Nemain and Macha, who is rejected by Cu Chulainn and is associated with a hooded crow.
This deity can appear solo or as part of a trio, and is often depicted on a chariot pulled by a large one-legged horse.  In one of her aspects, this daughter of Ernmas appears as an old hag that washes the clothes of those chosen to join her. In her more common guise she vows to kill the son of De Domnan by "taking the kidneys of his valor and the blood of his heart." A member of the Tuatha de Dannaan, she repeatedly appears to the man once known as Setanta, but he doesn't recognize her. FTP, name this war goddess, also known as Nemain and Macha, who is rejected by Cu Chulainn and is associated with a hooded crow.
This deity can appear solo or as part of a trio, and is often depicted on a chariot pulled by a large one-legged horse.  
Morrigan