[1] This sept had their royal seat at Maistiu (Mullaghmast) in South Kildare.
In 780 the high king Donnchad Midi (died 797) campaigned against Leinster and defeated Ruaidrí mac Fáeláin, devastating the territory of his adherents.
[2] That same year a congress of the synods of Uí Néill and Laigin was held at Tara and peace was restored.
[citation needed] Bran had married Eithne ingen Domnaill (died 795), the sister of Donnchad Midi, the high king of the Clann Cholmáin.
[7] On 6 May 795 Bran and Eithne were assassinated in a church at Cell Cúile Duma (near Stradbally, Co. Leix) by his successor Fínsnechta Cethardec mac Cellaig (died 808) of the Uí Dúnchada sept.