Cul Siblinne: now Kells in East Meath
Cul Silinne: Kilcooley, a few miles to the south-east of Cruachan, in the County Roscommon
Culenn: a river in Conalle Murthemni
Cuillenn: see Ard Cuillenn
Cuillenn Cinn Duni: a hill in Ulster
Cuince: a mountain in Cualnge
Cumung: a river in Conalle Murthemni
Curoi: son of Darè and king of South Munster
Cuscraid Menn Macha: son of Conchobar
Dall Scena: a place north of Ailè