John Neville Keynes (1852–1949) is best known for fathering one of the most influential economists of our time, John Maynard Keynes (1883–1946). Yet in his own day he was a formidable logician1 and economist himself. Although overshadowed by his colleague Alfred Marshall, his Scope and Method of Political Economy (1891) is still considered a minor classic and read by specialists in the history of economic thought. Maynard Keynes's biographers have portrayed Neville as having a powerful influence on him, even if they have failed to detail the impact of the father's logic and economics on his famous son.