"Monmouth died at the executioners's axe [am 15. Juli 1685] after his foolish and bloody rebellion, only a few months after his father's death." (in: Antonia Fraser: King Charles II, id., p. 461). Er hatte versucht nach dem Tod seines Vaters, seinen katholischen Onkel Jakob II. (VII.) Stuart vom schottisch-englischen Thron zu vertreiben und sich selbst als neuer anglikanischer König die Krone auf das Haupt zu setzen.
Vor seiner Hinrichtung hatte er sich noch an seine Stiefmutter Katharina von Braganza in einem Brief, geschrieben am 9. Juli 1685, gewandt und sie um Hilfe gebeten: "MADAM, - Being in this unfortunate condition, and having none left but your Majesty that I think may have some compassion of me, and that for the last King’s sake [seines Vaters, des englisch-schottischen Königs Karl II. Stuart], makes me take this boldness to beg of you to intercede for me. I would not desire your Majesty to do it, if I were not from the bottom of my heart convinced how I have been deceived in it, and how angry God Almighty is with me for it; but I hope, Madam, your intercession will give me life to repent of it; and to show the King [dem jetzigen König, seinem Onkel Jakob II. (VII.) Stuart] how really and truly I will serve him hereafter; and I hope, Madam, your Majesty will be convinced that the life you save shall ever be devoted to your service, for I have been, and ever shall be, your Majesty’s most dutiful and obedient servant, MONMOUTH." (in: Francis Lancelott: The Queens of England and their Times, Volume II, id., p. 741). Katharina von Braganza setzte sich in der Tat für ihn ein - "She did so with great earnestness", konnte jedoch ihren Schwager Jakob II. (VII.) Stuart nicht überreden, Milde walten zu lassen.
Informationen über seine Hinrichtung: "The headsman was so nervous or unskilful, that unable to effectively execute his horrible task at the third stroke, he flung down the axe, and swore that his heart failed him, and he would do no more; but the sheriffs forced him to proceed, and at the fifth blow the head was severed from the mangled body." (in: Francis Lancelott: The Queens of England and their Times, Volume II, id., p. 760).