Mavor was born in Stranraer, Scotland, to a Free Church of Scotland minister and teacher James Mavor, and Mary Ann Taylor Bridie. He studied in Glasgow University. After that he taught for some time in a Glasgow college and read special courses in Glasgow University and Edinburgh University. He was also an editor for ScottishArt Review. He also became active in the Socialist League, chairing its Scottish district. In 1892, upon the recommendation of University of Toronto Professor William Ashley who was leaving for Harvard University, he took Ashley's chair of Political Economy and Constitutional History, moving to Toronto with his family. After 1892, he spent most of his life in Toronto, leaving only for short trips. In 1893, James Mavor was a founding member of the Toronto Chapter of the Alpha Delta Phi Literary Society. At the start, he caused turmoil when he stated Canada could not serve as the only source of wheat for the British Empire as general ideology of the Empire observed it. To avoid further misunderstanding, he took the economy of Russia as his major scientific specialization. As a professor he also researched the economies of Canada, China, Korea, and Japan. In 1898 through 1899, he became a key figure in the Doukhobor immigration to Canada. His correspondent at the time was notable Russian scientist and major Anarchist ideologist Kropotkin, at that time living in the UK, who proposed that Doukhobor peasantry, numbering several thousand people, be settled in Canada. Through several years that followed, he took a keen interest in the Doukhobor cause, siding with them in cases of conflict with Canadian authorities. Kropotkin warmly regarded Mavor as a friend and later recalled that Mavor was "a living encyclopedia of Canadian economics." As an arts activist, Mavor helped organize several Canadian art venues, such as the Art Gallery of Ontario and the Royal Ontario Museum. He published articles and statistics for the Canadian government regarding immigration, wheat production, and workers' healthcare compensation. In 1914, he published the first edition of his magnum opus, An Economic History of Russia, in two volumes. This publication earned him membership in the Royal Society of Canada. After over 30 years of teaching economy, he became professor emeritus and retired in 1923. After he left, the University of Toronto for some time discontinued the tradition of extensive Russian studies he and William Ashley founded. He died at the age of 71 in Glasgow, Scotland, during a trip to relatives. His grandson is actor Mavor Moore, his great-granddaughters are actresses Charlotte Moore and Tedde Moore, and his great-great-grandson is actor and music producerNoah "40" Shebib.
Legacy
In honour of James Mavor, George Bernard Shaw named one of the main characters of his play Candida, Rev. James Mavor Morell.