Dub Calgaid mac Laidcnén
Dub Calgaid mac Laidcnén was a king of the Uí Cheinnselaig of South Leinster. He belonged to the Sil Chormaic sept of this branch of the Laigin and specifically to a branch which took over leadership of the Uí Dróna -the baronies of Idrone in modern County Carlow. His last paternal ancestor to hold the throne was his great great grandfather Crundmáel Erbuilc He was the brother of Donngal mac Laidcnén. He ruled from 761 to 769.
The Uí Cheinnselaig became involved in a period of infighting and in 769 Dub Calgaid was defeated and slain at the Battle of Ferns by his successor Cennselach mac Brain of the Sil Máeluidir sept.
