Most Ironic Work-Related Accident. Everrr.

I read in Wikipedia today that Gabriel Sanson, the younger son of the reluctant executioner Charles Henri Sanson, and the assistant to his elder brother Henri, the sixth Sanson to hold the inherited office, met the most unlikely and ironic of fates when he: "died from an accident at work of falling down from the scaffold while presenting a cut off head in 1792".

I would love to know who he had just executed who had such sweet revenge upon his executioner...