In Irish mythology, Danand or Donann is the daughter of Delbáeth, son of Ogma, (Not to be confused with the similarly named Danu, the primordial mother.) Danand is the mother of Brian, Iuchar, and Iucharba by her own father, who is occasionally given the name Tuireann or Tuirell as well.
References
Danand Wikipedia(Text) CC BY-SA