(1840) Ottoman-German Jewish physician, naturalist Emin Pasha is born. He was thought to cause the spread of sleeping sickness to Uganda.
(1892) Belgian physiologist Corneille Heymans is born. He won the 1938 Nobel Prize for Physiology or Medicine by demonstrating how blood pressure and oxygen-blood levels are measured by the body.
(1955) Northern Ireland politician and psychiatrist John Alderdice, Baron Alderdice is born. He worked part-time as a consultant psychiatrist in the National Health Service.