Cú Chulainn sends Láeg to the Otherworld with Lí Ban, sister to Fand, and he brings back bountiful descriptions of the Otherworld in the tale Serglige Con Culainn (The Sickbed of Cúchulainn). In the tale of Cú Chulainn's death he is killed by Lugaid mac Con Roí with a spear intended for Cú Chulainn.
Tochmarc Emire (Recension II), ed. A.G. van Hamel (1933). Compert Con Culainn and Other Stories. Mediaeval and Modern Irish Series 3. Dublin: DIAS.; tr. Kuno Meyer (1888). "The Wooing of Emer". Archaeological Review. 1: 68–75, 150–5, 231–5, 298–307.