Scottish statesman and sibling of Elizabeth and John Haldane (1856-1928), known for his influential role in politics during the late 19th and early 20th centuries.

Scottish writer and sister of Richard Haldane and John Haldane (1862-1937).

Scottish physiologist and sibling of Richard and Elizabeth Haldane.

Scottish geneticist, son of John Haldane, known for his significant contributions to the advancement of population genetics.