His next consideration was how to execute it. He could not effect his purpose by poison; and any attempt at open violence would, in all probability (as the queen was constantly guarded), be attended by failure. He therefore determined, as the surest means, to have recourse to fire-arms. And, being an unerring marksman, he felt certain of success in this way.
Having secretly procured an arquebus and ammunition, he now only awaited a favourable moment for the enterprise. This soon occurred. It being rumoured one night in the Tower that the queen was about to proceed by water to Whitehall on the following morning, he determined to station himself at some point on the line of road, whence he could take deliberate aim at her. On inquiring further, he ascertained that the royal train would cross the drawbridge leading from the south of the By-ward Tower to the wharf, and embark at the stairs. Being personally known to several officers of the guard, he thought he should have no difficulty in obtaining admittance to Saint Thomas’s Tower, which, while it commanded the drawbridge, and was within shot, was yet sufficiently distant not to excite suspicion. Accordingly, at an early hour, on the next day, he repaired thither, wrapped in a cloak, beneath which he carried the implement of his treasonable intent.
As he anticipated, he readily procured admission, and, under pretence of viewing the passage of the royal train, was allowed a place at a narrow loophole in the upper story of one of the western turrets. Most of the guard being required on the summit of the fortification, Underhill was left alone in the small chamber. Loud shouts, and the discharge of artillery from the ramparts of the fortress, as well as from the roofs of the different towers, proclaimed that Mary had set forth. A few embers were burning on the hearth in the chamber occupied by the enthusiast. With these he lighted his tow-match, and offering up a prayer for the success of his project, held himself in readiness for its execution.
Unconscious of the impending danger, Mary took her way towards the By-ward Tower. She was attended by a numerous retinue of nobles and gentlemen. Near her walked one of her councillors, Sir Henry Bedingfeld, in whom she placed the utmost trust, and whose attachment to her had been often approved in the reigns of her father and brother, as well as during the late usurpation of Lady Jane Grey. Sir Henry was a grave-looking, dignified personage, somewhat stricken in years. He was attired in a robe of black velvet, of the fashion of Henry the Eighth’s time, and his beard was trimmed in the same bygone mode. The venerable knight walked bareheaded, and carried a long staff, tipped with gold.
By this time Mary had reached the gateway opening upon the scene of her intended assassination. The greater part of her train had already passed over the drawbridge, and the deafening shouts of the beholders, as well as the renewed discharges of artillery, told that the queen was preparing to follow. This latter circumstance created a difficulty, which Underhill had not foreseen. Confined by the ramparts and the external walls of the moat, the smoke from the ordnance completely obscured the view of the drawbridge. Just, however, as Mary set foot upon it, and Underhill had abandoned the attempt in despair, a gust of wind suddenly dispersed the vapour. Conceiving this a special interposition of Providence in his favour, who had thus placed his royal victim in his hands, the Hot-Gospeller applied the match to the arquebus, and the discharge instantly followed.
The queen’s life, however, was miraculously preserved. Sir Henry Bedingfeld, who was walking a few paces behind her, happening to cast his eye in the direction of Traitor’s Tower, perceived the barrel of an arquebus thrust from a loop-hole in one of the turrets, and pointed towards her. Struck with the idea that some injury might be intended her, he sprung forward, and interposing his own person between the queen and the discharge, drew her forcibly backwards. The movement saved her. The ball passed through the knight’s mantle, but without harming him further than ruffling the skin of his shoulder; proving by the course it took, that, but for his presence of mind, its fatal effect must have been certain.