Conall mac Fidhghal, 25th King of Uí Maine, died 782.
Reign
Duncadho mac Duib Da Tuadh does not appear in the genealogies. His is the second of four or five short and highly obscure reigns.
This may indicate conflict, perhaps due to internal succession disputes or aggression from the expanding Uí Briúin under Artgal mac Cathail (died 791).
References
Duncadho mac Duib Da Tuadh Wikipedia(Text) CC BY-SA