John Stuart Mackenzie was born in Glasgow on 29 February 1860 and died at his home in Brockweir, overlooking Tintern Abbey, on 6 December 1935. His family emigrated in 1868 to Buenos Aires, but shortly afterwards both parents died, and the children were brought back to Scotland to be cared for by an aunt. Mackenzie went in 1877 to Glasgow University (where he studied under Edward Caird), and then in 1886, encouraged by his friend and contemporary W.R. Sorley, to Trinity College, Cambridge. It was here that he formed a close friendship with McTaggart which introduced him to the philosophy of Hegel. After his election in 1890 to a fellowship at Trinity, he became (at the same time) assistant to Professor Robert Adamson at Owens College, Manchester until, in 1895, he succeeded Sorley as Professor of Philosophy at University College Cardiff, a post he held up to his retirement in 1915, at the relatively early age of fifty-five. He married in 1898 and his wife, Millicent Mackenzie, became the first women professor in the country, holding the Chair of Education in Cardiff, and publishing (among other books) Hegel's Educational Theory and Practice (1914). They had no children, and his later years were spent in his home at Brockweir.
From The Continuum Encyclopedia of British Philosophy in Oxford Reference.