Marie-Anne Charlotte Corday d'Armont, a young teenaged girl from Normandy was executed on the 17th July 1789.  Charlotte believed fervently in the principles behind the French Revolution with all the zeal and romanticism of youth and allowed herself to be convinced that killing Marat wold restore peace and harmony to France.  She succeeded in killing him in his bathtub.
On the day of her execution even the executioner was heavy hearted at the prospect of killing one so young and pretty.  After cutting her hair short he allowed her to travel in the cart to her execution with her hands unbound for fear the ropes would hurt her soft skin.  She stood in the back of the cart throughout th eentire journey to the guillotine.
Memoirs of the executioner, CH Sanson:
Everyone, Robespierre, Desmoulins and Danton was very animated.  I myself kept turning around to look at her, and the more I gazed at her the, more I wanted to gaze.  This was not because she was beautiful, although she was very beautiful, but because I couldn't believe that right up to the endshe could remain as sweet and courageous as she had been... ... She didn't speak, she ignored those who shouted obscenities and filth at her, but she did look at the hordes of citizens lined up - there was such a crowd in the street that progress was extremely slow.  When we reached the Place de Revolution I got out and stood in front of her so that she should not see the guillotine, but she peered around me saying "I have the right to be curious, I've never seen one before".
They proceeded with her execution very quickly and smoothly.  After the blade fell a scaffold carpenter lifted her head and slapped it several times outraging even the bloodthirsty crowd.  It is said that the cheeks of the head reddened even although of course there was little blood left in the head and corpses do not react to pressure after death.  No-one is sure why.  Her executioner was convinced that consciousness remains in the brain for some time after seperation from the body.
Charlotte's execution is one of the most documented of the whole revolution.