was jointly High King of Ireland with Colmán Rímid of the Cenél nEógain after the death of Áed mac Ainmuirech in 598. Áed mac Ainmuirech died in battle near Baltinglass, modern County Wicklow, fighting against Brandub mac Echach, King of Leinster. It was to distinguish him from that Áed and from others that Áed mac Diarmato received his cognomen, "Áed of Slane", referring to the Hill of Slane, a prehistoric site near the Hill of Tara, which lay within his lands. Some sources omit Áed from the list of kings, including the earliest, that found in the Baile Chuind Chétchathaig, a work of dynastic propaganda compiled in the reign of Áed's grandson Fínsnechta Fledach. His omission from this is believed to be a transcription error, and it is very likely that he was High King. In 600 Áed had his nephew, Suibne mac Colmáin Már, killed, "treacherously" says Adomnán. According to Marianus Scotus, Suibne, rather than Áed and Colmán Rímid, had been High King. In 604 both Áed and Colmán Rímid died by violence. Colmán was murdered by a kinsman and Suibne's son Conall Guthbinn killed Áed. This may have happened in battle and Áed may have been allied with the Uí Failgi, neighbours of Conall's. Áed and Colmán Rímid were followed as High King by Áed Uaridnach. Áed's recorded children are at least six sons, including Diarmait and Blathmac, and a daughter named Rontud. Áed's grandchildren included Fínsnechta Fledach, Sechnassach and Cenn Fáelad. His wife's name is recorded as Eithne. References High Kings of Ireland Kings of Brega 604 deaths People from County Meath 6th-century Irish monarchs 7th-century Irish monarchs