Haldane, J. B. S. Haldane, John Burdon Sanderson Haldane -- (Scottish geneticist (son of John Haldane) who contributed to the development of population genetics; a popularizer of science and a Marxist (1892-1964))
Haldane, John Haldane, John Scott Haldane -- (Scottish physiologist and brother of Richard Haldane and Elizabeth Haldane; noted for research into industrial diseases (1860-1936))