Cú Chulainn (/kuːˈkʌlɪn/ koo-KHUL-in[1][2] Irish: [kuːˈxʊlˠɪn̠ʲ] ⓘ), is an Irish warrior hero and demigod in the Ulster Cycle of Irish mythology, as well as in Scottish and Manx folklore.[3] He is believed to be an incarnation of the Irish god Lugh, who is also his father.[4][5][6] His mother is the mortal Deichtine, sister of King Conchobar mac Nessa.[7] Born Sétanta, he gained his better-known name as a child, after killing Culann's fierce guard dog in self-defence and offering to take its place until a replacement could be reared, hence he became the "Hound (cú) of Culann". He was trained in martial arts by Scáthach, who gave him the spear Gáe Bulg. It was prophesied that his great deeds would give him everlasting fame, but that his life would be short. At the age of seventeen he defended Ulster single-handedly against the armies of Queen Medb of Connacht in the famous Táin Bó Cúailnge ("Cattle Raid of Cooley"). He is known for his terrifying battle frenzy (ríastrad),[8] in which he becomes an unrecognisable monster who knows neither friend nor foe. He fights from his chariot, driven by his loyal charioteer Láeg and drawn by his horses, Liath Macha and Dub Sainglend. Cú Chulainn's wife is Emer, although he has many other lovers. With Aífe he has a son named Connla, whom Cú Chulainn tragically kills. Cú Chulainn himself is said to have died in battle, binding himself to a standing stone so he can die on his feet. The image of Cú Chulainn is often depicted in piece of art such as a bronze sculpture of the dying Cú Chulainn by Oliver Sheppard in the Dublin General Post Office (GPO) in commemoration of the Easter Rising of 1916 and stained glass panel of it in St. Enda's School. In literature, Cú Chulainn has been a central figure in many works. Lady Gregory retold many of the legends of Cú Chulainn in her 1902 book Cuchulain of Muirthemne, which paraphrased the originals but also romanticized some of the tales and omitted most of the more violent content.