Donnchadh of Argyll

Donnchadh of Argyll (Duncan of Argyll)
Born	before 1175
Died	Between 1244 and 1248
Other names	Donnchad mac Dubgaill Donnchadh of Lorne
Title	Lord of Argyll, Lord of Lorne
Predecessor	Ruaidhrí mac Raghnaill (not certain)
Successor	Eóghan of Argyll
Spouse(s)	Unknown
Children	Several, including Eóghan

Donnchadh of Argyll or Donnchadh mac Dubhghaill (Anglicized: "Duncan, son of Dougall") was a late 12th and early 13th century Scottish noble. He was the son of Dubhghall mac Somhairle, son of Somhairle mac Gille Bhrighde. He is the first of the MacDougall lords of Argyll to take the title de Argadia, and can be regarded as the founder of the successful MacDougall lordship of Argyll. He was also a prominent builder, notable for his construction of Ardchattan Priory and Dunstaffnage Castle.

Born at an unknown date probably somewhere in the mid 12th century, Donnchadh appears in the records for the first time in 1175, appearing along with his father and brother Amhlaibh in the Durham Liber Vitae, making a pilgrimage to St Cuthbert.

During Donnchadh's time the great feuds that had been causing war on the western seaboard of Scotland since Somhairle mac Gille Bhrighde were coming to an end. Ruaidhrí mac Raghnaill, son of Raghnall mac Somhairle, King of the Isles and Lord of Argyll, was at peace with Ragnall mac Gofraid, King of Mann, and had become friendly with Ailean mac Lachlainn, Lord of Galloway and Constable of Scotland. In this context, King Alexander II of Scotland led expeditions into Argyll in 1221 and 1222, expeditions which led to Donnchadh being recognised or appointed to the Lordship of Lorne. Donnchadh remained a strong supporter of the Scottish crown against the interests of Ruaidhrí mac Raghnaill and Amhlaibh Dubh.

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