John Angus Macnab (1906–1977) was a British fascist politician who embraced Roman Catholicism under the influence of G. K. Chesterton and Hilaire Belloc.
[7] In the early stages of the Second World War, Macnab served as an ambulance driver, but was soon detained under Defence Regulation 18B due to his previous Nazi sympathies.
Around the same time, he developed an interest in Spain, and in 1945, at the end of World War II, he settled in Toledo with his wife Catherine Collins, an Irish former BUF activist who he had married the same year.
While in Spain, Macnab received a number of high-profile visitors from Britain and the United States, including novelists Evelyn Waugh and James Michener, publisher Tom Burns, and Marco Pallis.
In an article in the British journal New Blackfriars,[13] William Stoddart paid tribute to Macnab as a leading Catholic intellectual who was the author of a fascinating study of the Spanish Middle Ages.