May 21 Christian Jürgensen Thomsen, Danish Archaeologist, created Stone, Bronze, Iron age system, dies at 76 May 25 Madeleine Sophie Barat, French saint and founder of the Society of the Sacred Heart, dies at 85 Apr 1865 Famous Deaths by Year Jun 1865 Famous People by Cause of Death Assassination Car Crash Hanging Killed in Action Plane Crash Poisoning