 The former are more prominent in the seventh century, but after the death of Cináed mac Írgalaig in 728 all the high-kings of the Southern Uí Néill come from the Clann Cholmáin except for a brief period between 944 and 956 when the king of Knowth, Congalach Cnogba, restored the high-kingship to the Brega line.Finnian prophesied that Áed would "surpass his brethren and more kings will come from him than from the sons of others".This prophecy may date to the period before 750, when the Síl nÁedo Sláine were dominant, after which the descendants of Áed's brother Colmán Már—Clann Cholmáin—were clearly the most important group descended from Diarmait mac Cerbaill.