Examines the institution of fosterage in early Ireland, focusing on the adoption of Cú Chulainn by Conchobar and the other prominent Ulstermen. Discusses in particular the terms: gormac, dalta, nia, mac fóesma, sét gerta (or gairitechta), orba niad and orba dúthrachta. Cf. T. Ó Cathasaigh, in Peritia 5 (1986), pp. 128-160.