Crimthann Nia Náir, son of Lugaid Riab nDerg, was, according to medieval Irish legend and historical tradition, a High King of Ireland. Lugaid is said to have fathered him on his own mother, Clothru, daughter of Eochu Feidlech. Clothru was thus both his mother and his grandmother.
- Occupation
- king
- Position held
- High King of Ireland
- Citizenship
- Ireland
- Died
- 9
