Ciannachta

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The Ciannachta were a population group of early historic Ireland. They claimed descent from the legendary figure Tadc mac Céin. Modern research indicates Saint Cianán and his followers may have been the origin behind the tribal name as it is a late construction similar in form to Eóganachta and Connachta. They first appear in historical sources in the 6th century, and were found in several parts of the island, including in Brega and Airgialla. The Ciannachta groups were absorbed over time. Modern descendants (mostly surnamed O'Carroll) have formed a Clan Cian society (headquartered in the United States).^[1]