Dowden 1894:23–32 In The Life of St. Ninian Dowden, John (1894), "The Life of St. Ninian", The Celtic Church in Scotland, London: Society for Promoting Christian Knowledge, pp. 23–32
Hardy 1862:44 "The Irish Life was written long after Ninian's death, by an author of little discretion, who wished to adjust the conduct of the Saint to the usages of his own time." in the footnote, for example. Hardy, Thomas Duffus (1862), Descriptive Catalogue of Materials Relating to the History of Great Britain and Ireland, vol. I, London: Longman, green, Longman, and Roberts — many references to, and comments upon, sources of information
for example, see Bridgett, Thomas Edward (1881), "Catholicity of North-Britons", History of the Holy Eucharist in Great Britain, vol. I, London: C. Kegan Paul & Co, p. 55 (footnote) – Ussher printed a manuscript of the letters of Alcuin, which contained a request for the intercession of Saint Ninian; however, Ussher edited the manuscript to change parts of it, and among his changes was the omission of Alcuin's request, but leaving other parts of it intact.
Scott 1905:378–388 Nynia in Northern Pictland Scott, Archibald Black (July 1905), "Nynia in Northern Pictland", The Scottish Historical Review, II (8), Glasgow: James Maclehose and Sons (published 1905): 378–388, JSTOR25517649
"The Calendar". The Church of England. Retrieved 27 March 2021.
jstor.org
Scott 1905:378–388 Nynia in Northern Pictland Scott, Archibald Black (July 1905), "Nynia in Northern Pictland", The Scottish Historical Review, II (8), Glasgow: James Maclehose and Sons (published 1905): 378–388, JSTOR25517649
mullmonastery.com
"Kilninian". Mull Monastery. Retrieved 29 December 2021.
newadvent.org
Huddleston, G (1911). "St. Ninian". The Catholic Encyclopedia. New York: Robert Appleton Company.