Michał Piekarski, also known as Michael Piekarski, was a Polish petty nobleman and landowner, who attempted to assassinate king Sigismund III in 1620.
Sigismund III around the time of the assassination attempt
Piekarski being dismembered by horses during execution, 1620
François Ravaillac was a French Catholic who assassinated King Henry IV of France in 1610.
François Ravaillac brandishing his dagger, in a 17th-century engraving
Assassination of Henry IV, engraving by Gaspar Bouttats.
Ravaillac murdering Henry IV, rue de la Ferronnerie in Paris