| Sources |
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- [S1072564683] The Family of Hay; Charles J Colcock {1908}, 86.
- [S1072564680] The Scots Peerage; Sir James Balfour Paul {1904-1914, 2000 rev} with Addenda et Corrigenda {2000}, II:122.
- [S1072564700] Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom; GE Cokayne, Sutton Publishing Ltd , II:475.
- [S1072564711] The Family of Hay; Charles J Colcock {1908}, 86.
- [S1072564703] The Scots Peerage; Sir James Balfour Paul {1904-1914, 2000 rev} with Addenda et Corrigenda {2000}, II:122.
- [S1072564698] Sutherland and Caithness in Saga-time, or, The Jarls and the Freskyns; James Gray {1922}, 109.
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