Domnall mac Donnchada or
Domnall Bán (
anglicised Donald III) (d. 1099) was
King of Scots. He was the second known son of
Donnchad mac Crínáin.
Domnall's activities during the reign of his elder brother
Máel Coluim are not recorded. It appears that he was not his brother's chosen heir, contrary to earlier custom, but that Máel Coluim had designated Edward, his eldest son by
Margaret, as the king to come. If this was Máel Coluim's intent, his death and that of Edward on campaign in
Northumbria in November 1093 (see
Battle of Alnwick (1093)) confounded his plans. These deaths were followed very soon afterwards by that of Queen Margaret.
John of Fordun reports that Domnall invaded the kingdom after Margaret's death "at the head of a numerous band", and laid siege to
Edinburgh with Máel Coluim and Margaret's sons inside. Fordun has
Edgar Ætheling, concerned for his nephews' well-being, take the sons of Máel Coluim and Margaret to England.
Andrew of Wyntoun's much simpler account has Domnall become king and banish his nephews. The
Anglo-Saxon Chronicle records only that Domnall was chosen as king and expelled the English from the court.
In May 1094, Domnall's nephew
Donnchad, son of Máel Coluim and his first wife
Ingibiorg Finnsdottir, invaded at the head of an army of Anglo-Normans and Northumbrians, aided by his half-brother
Edmund and his father-in-law
Gospatric. This invasion succeeded in placing Donnchad on the throne, but an uprising defeated his allies and he was compelled to send away his foreign troops. Donnchad was killed on
12 November 1094 by
Máel Petair, Mormaer of Mearns. The
Annals of Ulster say that Donnchad was killed on the orders of Domnall (incorrectly called his brother) and Edmund.
Domnall resumed power, probably with Edmund as his designated heir. Domnall was an elderly man by the standards of the day, approaching sixty years old, and without any known sons, so that an heir was clearly required.
William of Malmesbury says that Edmund bargained "for half the kingdom", suggesting that Domnall granted his nephew an
appanage to rule.
Edgar, eldest of Máel Coluim and Margaret's exiled sons, obtained the support of
William Rufus, although other matters delayed Edgar's return on the coat-tails of an English army led by his uncle Edgar Ætheling. Domnall's fate is not entirely clear. William of Malmesbury tells us that he was "slain by the craftiness of
David ... and by the strength of William [Rufus]". The Anglo-Saxon Chronicle says of Domnall that he was expelled, while the
Annals of Tigernach have him blinded by his brother.
John of Fordun, following the king-lists, writes that Domnall was "blinded, and doomed to eternal imprisonment" by Edgar. The place of his imprisonment was said to be Rescobie, by
Forfar, in
Angus. The sources differ as to whether Domnall was first buried at
Dunfermline Abbey or
Dunkeld Cathedral, but agree that his remains were later moved to
Iona.
While no sons of Domnall are known, Hextilda, daughter of Domnall's daughter Bethóc, married
Richard Comyn, Justiciar of Lothian. The claims of
John II Comyn, Lord of Badenoch to the crown in the
Great Cause came from Domnall through Bethóc and Hextilda. Ladhmann son of Domnall, "grandson of the King of Scots", who died in 1116 might have been a son of Domnall.
The minor character of
Donalbain in
William Shakespeare's play
Macbeth represents Domnall.
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