James Mor Stewart

[6] The family properties of Doune Castle and Falkland Palace were captured, and[6] Duke Murdoch and two of his sons were imprisoned and held pending trial.

[6] James marched on the town of Dumbarton, burned it, and killed the keeper of the royal castle there, Sir John Stewart of Dundonald, who was the King's uncle.

As many as 600 members of the clan were forced to flee after the failure of the revolt, exiled to Kintyre and the Isle of Gigha, where they adopted the new name of MacBhreatneaich of M'Vretny ("son of the Briton") .

Later in 1425, pursued by a royal expedition, James fled to Antrim, Ireland, accompanied by the sons of his dead brother Walter, to escape the King's justice.

James Stewart was in line to claim the throne as sole surviving grandson of the Duke of Albany, brother to the late King Robert III.

At some point after she regained her liberty, Isabella brought her young grandchildren, the children of James the Fat, to be raised at her castle at Inchmurrin.

Seal of James's father, Murdoch Stewart, Duke of Albany
James burned the town of Dumbarton in 1425, but Dumbarton Castle held out against him.
King James I of Scotland , mortal enemy of the Albany Stewarts.
Inchmurrin , Loch Lomond , where James' mother Isabella of Lennox raised her grandchildren after her eventual release from Tantallon Castle .