On his father’s side, Keynes is the grandson of Richard Keynes, the nephew of the Cambridge professor Simon Keynes, and the great-great-nephew of John Maynard Keynes, an economist. His great-great-great-grandfather was the famous naturalist Charles Darwin, who invented the theory of evolution. Keynes' great-grandparents were Edgar Adroam. 1st Barpm Adoroam and Hester Adrian, Baroness Adrian, both receivers of the Nobel Prize.