James Nicol Dunn was editor of the London newspaper, the Morning Post. He was the eldest son of Joseph Dunn and Margaret Macleod.
Dunn had initially intended to study law, before entering journalism. As a student, he worked for the Dundee Advertiser and then the Scotsman. He became the managing editor of the National Observer, before working for the Pall Mall Gazette. From 1895 to 1897 he was the editor of Black & White and Ludgate, and from 1897 to 1905 of the Morning Post. In 1904 he was elected President of the Institute of Journalists, becoming editor of the Manchester Courier in 1905 until 1910, of the Johannesburg Star from 1911 to 1914 and Glasgow News from 1914.
Who Was Who: A Companion to Who's Who, vol. 2, 1916-1928, London, 1942; Dictionary of National Biography, Oxford, 2004.