Cú Chulainn, also spelt Cú Chulaind or Cúchulainn (; Irish for "Culann's Hound") and sometimes known in English as Cuhullin , is an Irish mythological hero who appears in the stories of the Ulster Cycle, as well as in Scottish and Manx folklore. He is believed to be an incarnation of the god Lugh, who is also his father. His mother is the mortal Deichtine, sister of Conchobar mac Nessa.