On his father 's side , Keynes is the grandson of physiologist Richard Keynes , the nephew of two Cambridge professors , the historian Simon Keynes , and the neuroscientist Roger Keynes , the cousin of Catholic writer and apologist Laura Keynes , and the great-great-nephew of economist John Maynard Keynes .
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 .