John Abercromby (fl. 1561) was, according to Thomas Dempster's Historia ecclesiastica (1829),[1] a Benedictine monk who was executed for his Roman Catholicism. However, his identity is doubtful: "Abercromby has not come to light in recent scholarly work, nor is he found in the published records... The only possible conclusion is that John Abercromby is a figment, a ‘ghost’ fabricated by Thomas Dempster."[2]
According to the 1885 Dictionary of National Biography He was the author of ‘Veritatis Defensio’ and ‘Hæreseos Confusio.’[3]