838 years ago, Reginald FitzUrse, Hugh de Moreville, William de Tracy, and Richard le Breton did; based on an offhand annoyed utterance by an absolute monarch.
Coincidentally, precisely 767 years later; the Irish (or rather 26/32nds of them) finally freed themselves of those meddlesome kings (though the process was significantly more difficult than that of the four knights, and poor Fr. Beckett).
