Domangart mac Domnaill (died 673) was a king in Dál Riata (modern western Scotland) and the son of Domnall Brecc. It is not clear whether he was over-king of Dál Riata or king of the Cenél nGabráin.
Dál Riata or Dál Riada was a Gaelic overkingdom that included parts of western Scotland and northeastern Ireland, on each side of the North Channel. At its height in the late 6th and early 7th centuries, it encompassed roughly what is now Argyll in Scotland and part of County Antrim in the Irish province of Ulster.
Scotland is a country that is part of the United Kingdom. Sharing a border with England to the southeast, Scotland is otherwise surrounded by the Atlantic Ocean to the north and west, by the North Sea to the northeast and by the Irish Sea to the south. In addition to the mainland, situated on the northern third of the island of Great Britain, Scotland has over 790 islands, including the Northern Isles and the Hebrides.
Domnall Brecc was king of Dál Riata, in modern Scotland, from about 629 until 642. He was the son of Eochaid Buide.
Domangart is not listed by the Duan Albanach but is included in other sources, such as genealogies of William the Lion, and that of Causantín mac Cuilén found with the Senchus fer n-Alban. In these genealogies he is noted as the father of Eochaid mac Domangairt.
The Duan Albanach is a Middle Gaelic poem found with the Lebor Bretnach, a Gaelic version of the Historia Brittonum of Nennius, with extensive additional material.
Constantine, son of Cuilén, known in most modern regnal lists as Constantine III, was king of Scots from 995 to 997. He was the son of Cuilén, King of Scotland. John of Fordun calls him, in Latin, Constantinus Calvus, which translates to Constantine the Bald. Benjamin Hudson notes that insular authors from Ireland and Scotland typically identified rulers by sobriquets. Noting for example the similarly named Eugenius Calvus, an 11th-century King of Strathclyde.
The Senchus fer n-Alban is an Old Irish medieval text believed to have been compiled in the 10th century. It provides genealogies for kings of Dál Riata and a census of the kingdoms which comprised Dál Riata.
The Annals of Ulster for 673 report: "The killing of Domangart, son of Domnall Brecc, the king of Dál Riata." Some king-lists state that in his time the Cenél Comgaill separated from the Cenél nGabráin.
The Annals of Ulster are annals of medieval Ireland. The entries span the years from A.D. 431 to A.D. 1540. The entries up to A.D. 1489 were compiled in the late 15th century by the scribe Ruaidhrí Ó Luinín, under his patron Cathal Óg Mac Maghnusa on the island of Belle Isle on Lough Erne in the kingdom of Fermanagh. Later entries were added by others.
It is not clear who succeeded Domangart as king of Dál Riata, if he was such, or as king of the Cenél nGabráin. Known kings after Domangart include Máel Dúin mac Conaill and Domnall Donn of the Cenél nGabráin and Ferchar Fota of the Cenél Loairn is assigned a long reign of 21 years by the Duan Albanach and other king-lists, and this would place the beginning of his rule close to the death of Domangart.
Máel Dúin mac Conaill was a king in Dál Riata.
Domnall Donn was king of Dál Riata. He was a son of Conall Crandomna.
Ferchar Fota was probably king of the Cenél Loairn of Dál Riata, and perhaps of all Dál Riata. His father is named as Feredach mac Fergusa and he was said to be a descendant in the 6th generation of Loarn mac Eirc.
