Among those to whom Killigrew thus boasted was the dissolute second Duke of Buckingham, whose curiosity was so stimulated by what he heard that he entered the lists himself, and quickly succeeded in ousting Killigrew from his place in my lady's favour. To the tavern-sot thus succeeded the most splendid noble in England, a man who, in his record of gallantry, was no mean rival to the Countess herself. To be thus displaced by the man to whom he had boasted his conquest was a bitter blow to the libertine's vanity; to be cut dead by Lady Shrewsbury, who had no longer any use for him, roused him to a frenzy of rage in which he assailed her with the bitterest invectives; "painted a frightful picture of her conduct, and turned all her charms, which he had previously extolled, into defects." The Duke's warnings were powerless to stop his vindictive tongue; even a severe thrashing, which resulted in Killigrew begging abjectly for his life from his successful rival, failed to teach him prudence. His slanders grew more and more venomous until they brought on him a punishment which nearly cost him his life. But before Killigrew's tongue was thus silenced, the wooing of the Duke and the Countess was marred by a tragedy, to which our history happily furnishes no parallel. The Countess's husband had hitherto looked on with seeming indifference, while lover after lover succeeded each other in his wife's favour. But even the Earl's long forbearance had its limits; and these were reached when he saw the insolent coxcomb, Buckingham, a man whom he had always detested, usurp his place. He screwed up his laggard manhood to the pitch of challenging the Duke to a duel, which took place one January morning in 1667, and of which Pepys tells the following story: "Much discourse of the duel yesterday between the Duke of Buckingham, Holmes and one Jenkins, on one side, and my Lord Shrewsbury, Sir John Talbot and one Bernard Howard, on the other side; and all about my Lady Shrewsbury, who is at this time, and hath for a great while, been a mistress to the Duke of Buckingham. And so her husband challenged him, and they met yesterday in a close near Barne-Elmes, and there fought; and my Lord Shrewsbury is run through the body, from the right breast through the shoulder; and Sir John Talbot all along up one of his armes; and Jenkins killed upon the place, and the rest all, in a little measure, wounded. This will make the world think that the King hath good Councillors about him, when the Duke of Buckingham, the greatest man about him, is a fellow of no more sobriety than to fight about a mistress."