Donald II "The Madman", King of Scots

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Domnall mac Causantín, Rí na h'Alba

Also Known As: "Donald II // King of Scotland", "Domnall mac Causantín", "Dásachtach", "the Madman", "King of Scotland", "King of Alba", "Donald", "King Donald II of /Scotland/", "o Louco", "/Dasachtach/", "Dasachtach", "Donald'/'The Madman", "Domnall mac Causantín (Gaelic)", "Donald II", "10969"
Birthplace: Forres, Morayshire, Scotland
Death: Died in Laurencekirk, Kincardineshire, England
Cause of death: Killed in battle by the Danes at Dunnotter
Place of Burial: Saint Oran's Chapel, Argyllshire, Scotland
Immediate Family:

Son of Constantine I, King of the Picts and Scots and Sabhdh . ingen Gregor
Husband of Sigurda of Scotland
Father of Malcolm I, King of Scots; Donnchadh mac Causantín and Malcolm I Alpin Scotland Mael Coluim macDomnaill

Occupation: King of Scots, King of Scots and Picts, King of the Picts or of Alba
Managed by: Private User
Last Updated:

About Donald II "The Madman", King of Scots

  • Name: King Donald II of Scotland
  • Father: King Constantine I
  • Mother: unknown
  • Relation to Elizabeth II: 31st great-grandfather
  • House of: MacAlpin
  • Ascended to the throne: 889
  • Married: unknown
  • Children: Malcolm I
  • Died: 900, killed at Dunnottar, Aberdeen
  • Buried at: Isle of Iona
  • Succeeded by: his cousin Constantine

Donald (Domnall mac Causantín) was the son of Constantine. He succeeded Eochaid and Giric and annexed Srathclyde, establishling himself as King of the Scots. He had some success against the Vikings in the West, but the North was dominated by Viking Sigurd the Mighty based in Orkney.

Donald was killed in 900, possibly murdered, at Donnattar near Stonehaven, Aberdeenshire. He was buried on Iona -------------------- Donald II, King of Alba

    Donald II, King of Alba was the son of Constantine I, King of Alba. He died in 900 at Dunfother, Scotland, killed in action.1 He was buried at Isle of Iona, Argyllshire, Scotland.1
    He was also known as Domnall mac Causantín.2 He succeeded to the title of  King Donald II of Alba in 889.1 
    Succeeded the joint rule of Giric and Eochaid. Succeeded by Constantine II.

Child of Donald II, King of Alba 1.Malcolm I, King of Alba+ b. c 897, d. 954

Citations 1.[S11] Alison Weir, Britain's Royal Families: The Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 169. Hereinafter cited as Britain's Royal Families. 2.[S130] Wikipedia, online http;// Hereinafter cited as Wikipedia. -------------------- King of Scotland 899/00. Dun-fother. Killed in battle.


Notes ◦Other parishes in Scotland may boast themselves the birthplace of greater men than can Fordoun, but no district in Scotland has seen the death of so many Sovereigns.

Donald, King of Alban (889 - 900) was killed in a battle between the Danes and the Scots.
"Over Fotherdun upon the brink of the waves he lies,
In the east, in his broad, gory bed"
says St Berchan.
Dr Skene identifies this with the parish of Fordoun, although referring to Dun Fother or Dunnottar as the locality. The Kingdom of Alban extended from the Forth to the Spey.


Sources 1.[S327] Lakey - Genealogy, Gilbert Marlow Lakey, (

2.[S370] Kings & Queens, Neil Grant, (pub 2003 by HarperCollinsPublishers Hammersmith London W6 8JB), p8 (Reliability: 3)

3.[S410] Pedigrees of the Scottish Clans, John D McLaughlin, (, Genelaig Albanensium - (Pedigree of the Kings of Scotland) (Reliability: 3)

-------------------- Domnall mac Causantín, anglicized as Donald II, was King of the Picts or King of Scotland (Alba) in the late 9th century. He was the son of Constantine I (Causantín mac Cináeda). Donald is given the epithet Dásachtach, "the Madman", by the Prophecy of Berchán.

The change from king of the Picts to king of Alba is seen as indicating a step towards the kingdom of the Scots, but historians, while divided as to when this change should be placed, do not generally attribute it to Donald in view of his epithet. The consensus view is that the key changes occurred in the reign of Constantine II (Causantín mac Áeda), but the reign of Giric has also been proposed.

The Chronicle of the Kings of Alba has Donald succeeded by his cousin Constantine II. Donald's son Malcolm (Máel Coluim mac Domnall) was later king as Malcolm I. The Prophecy of Berchán appears to suggest that another king reigned for a short while between Donald II and Constantine II, saying "half a day will he take sovereignty". Possible confirmation of this exists in the Chronicon Scotorum, where the death of "Ead, king of the Picts" in battle against the Uí Ímair is reported in 904. This, however, is thought to be an error, referring perhaps to Ædwulf, the ruler of Bernicia, whose death is reported in 913 by the other Irish annals. --------------------

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Donald II "The Madman", King of Scots's Timeline

Forres, Morayshire, Scotland
- 900
Age 27
- present
Age 27
King of the Scots
Age 33
Age 35
Age 38
Fordoun, Aberdeenshire, UK
Age 38
Moray, Fordoun, Kincardine, Scotland
- present
Age 38
Age 38
Laurencekirk, Kincardineshire, England
Age 38
Argyllshire, Scotland