Some assert that the three Fothadhs were sons of Maccon, though they were always set down as of the Race of Fearghus. It was of them Oilill Olum said:
- The three sons whom Lughaidh left,
Though we love not,
Fothadh Airgtheach, Fothadh Cairptheach,
From Fothadh Airctheach, the Uaithne Thire,122 and Uaithne Cliach,123 are descended according to their genealogy. Fothadh Canann had a son Maicniadh. Maicniadh had two sons, namely, Breasal and Aenghus. Breasal had two sons, namely, Conla and Eochaidh. Eochaidh had three sons, namely, Sineall, Fiacha, and Conchobhar.