A. Anderson, Early Sources of Scottish History 2, Edinburgh, 1922, 522.
J. Anderson, Scotland in Early Christian Times, Edinburgh, 1881, 49-56.
Bannatyne Club, Liber S. Thome de Aberbrothoc, 1, Edinburgh, 1848, 3-8 no. 1, 101 no. 146, 104 no. 150, 105-6 no. 152, and 168-70 no. 23.
H. Boece, Scotorum historiae a prima gentis origine, Paris, 1526, bk 11 fol. CCXLII r.
I. Cowan, The Parishes of Medieval Scotland, Edinburgh, 1967, 178-9.
W. Duke, ‘Notice of the Fabric of St Vigeans Church; with Notice and Photographs of Early Sculptured Stones Recently Discovered there’, Proceedings of the Society of Antiquaries of Scotland, 9 pt. 2 (Edinburgh, 1873), 481-98.
R. Fawcett, The Architecture of the Scottish Medieval Church 1100-1560, London, 2011, 339-40.
J. Gifford, The Buildings of Scotland: Dundee and Angus (New Haven and London, 2012), 665-668.
A Jervise, Memorials of Angus and the Mearns, 1 (2nd edn.) Edinburgh, 1885, 239-40 and fn. 2.
A. Jervise, Memorials of Angus and the Mearns, 2 (2nd edn.), Edinburgh, 1885, 312 and 310-12 Appendix XX.
D. MacGibbon and T. Ross, The Ecclesiastical Architecture of Scotland, 3, Edinburgh, 1897, 459-62.
National Records of Scotland, Ordnance Survey Name Books: Forfarshire, 80 (1857-61), 37, 38, 89, 91 and 93-95.