Seán Cathanach Mac Dhòmhnaill, 4th of Dunnyveg

Seán Cathanach Mac Dhòmhnaill aka John Cathanach MacDonald, 4th of Dunnyveg, Gaelic lord, killed 1499.

Seán Cathanach Mac Dhòmhnaill/John Cathanach MacDonald
Title4th Clan Chief (styled)
PredecessorJohn Mor MacDonald, 3rd of Dunnyveg
SuccessorAlexander MacDonald, 5th of Dunnyveg


Seán Cathanach was a son of John Mor MacDonald and Sabina, daughter of Felim O'Neill of Clanaboy. His father was charged with treason and refused to surrender to King James IV of Scotland. With his father and three sons they were captured through the treachery of their kinsman John MacIan of Ardnamurchan. John Cathanach and his sons John Mor, John Og and Donald Balloch were tried, convicted of treason and hung on the Boroughmuir (now Burgh Muir) in 1499. John Cathanach's son, Alexander, fled to Ireland and became the next head of the lineage


By his wife, Cecelia, daughter of Robert Savage, Lord of the Ardes, they had;

  • Alexander, fled to Ireland, married Catherine, daughter of John Macdonald of Ardnamurchan, died in 1538 at Stirling, Scotland
  • John Mor, executed in 1499 with his father.
  • John Og, executed in 1499 with his father.
  • Donald Balloch, executed in 1499 with his father.
  • Angus Ileach, fled to Ireland.
  • Agnes, who firstly married Donald Gallach MacDonald, 3rd of Sleat, had issue; and secondly married Torquil MacLeod of Lewes, had issue.


  • pp375, Rev. A. MacDonald & Rev. A. MacDonald; The Clan Donald
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