The Lord Grey, with his eldest son, and the chief Captains and soldiers of the said garrison, who kept the Inner Ward of the Castle, where the most high and principal Tower, called the Keep, stood; thinking themselves in small surety there (being a place of the old sort of fortification) after they saw the Utter Ward possessed by the enemy, and such a number of the most forward soldiers consumed and spent; and no likelihood of any more aid to come in time: by the advice of the most expert soldiers there, concluded for the best, to treat with the Duke for composition: according to the which advice, he sent forth two gentlemen, with this message in effect. That
the Duke (being a man of war, and serving under a King) should not think it strange if the Lord Grey likewise (being a man of war, and serving his Prince, in manner) did his like deavour [endeavour] in well defending the place committed to his charge, so far forth, as to answer and bide the assault; considering that otherwise, he could never save his own honour, neither his truth and loyalty to his Prince. In respect whereof, according to the law of arms, he required honourable composition.
Which message, though it was well accepted of the Duke; yet he deferred his answer until the morrow. What [At which] time, the messengers repairing to him again, composition was granted in this sort.
First. That the Castle with all the furniture thereof, as well victuals as great artillery, powder, and other munitions of war, should be wholly rendered; without wasting, hiding, or minishment thereof.
Secondarily. That the Lord Grey, with all the Captains, Officers, and others having charge there, should remain prisoners, at the Duke's pleasure; to be ransomed after the manner of war.
Thirdly. That all the rest, as well soldiers as others, should safely depart, with their armour and baggage to what parts, it seemed them best: nevertheless, to pass, without sound of drum or trumpet, or displaying of an ensigns [flags]; but to leave them behind.
These conditions being received and approved on either party, the day following, that is to wit, the 22nd day of the said month of January, all the soldiers of the said fortress, as well English as strangers, with all the rest of the inhabitants and others (except the Lord Grey, Sir Arthur his son, Sir Henry Palmer Knight, Mount Dragon the above named Captain of the Spaniards, and other men of charge reserved by the Composition) departed, with their bag and baggages, from thence, towards Flanders. At whose issuing forth, there was esteemed [estimated] to the number of 800 or 900 able men for the war: part English, part Burgundians, with a small remnant of Spaniards.
After the winning of this town and Castle, the Duke, advising well upon the place, and considering that if it should happen to be regained by Englishmen, what a noisome neighbour the same might be to Calais, now being French; and specially what impeachment should come thereby for the passage thither from France; considering also the near standing thereof to the French King's fortress of Ardes, so that to keep two garrisons so nigh together should be but a double charge, and not only needless, but also dangerous, for the cause afore rehearsed: upon these considerations, as the Frenchmen write, he took order for all the great artillery, victuals, and other munition to be taken forth; and the Castle, with all the Bulwarks and other fortifications there, to be razed and thrown down, with all speed, and the stuff to be carried away, and employed in other more necessary places.
Then there rested nothing, within all the English Pale on that side, unconquered, but the little Castle or Pile called Hammes: which, though it were but of small force, made by art and industry of man's hand, and altogether of old workmanship, without rampiers [ramparts] or Bulwarks [redoubts]; yet, nevertheless, by the natural situation thereof, being environed on all sides, with fens and marsh grounds, it could not easily be approached unto: either with great ordnance for the battery, or else with an army to encamp there, for a siege; having but one straight passage thereto by a narrow causey [causeway], traversed and cut through, in divers places, with deep ditches always full of water. Which thing, being well foreseen by Edward Lord Dudley, then Captain there, having as good cause to suspect a siege there as his neighbours, had, afore the Frenchmen's coming to Guisnes, caused all the bridges of the said causey, which were of wood, to be broken; to give thereby the more impeachment [obstacles] to the French, if they should attempt to approach the same; as, shortly after, they did, and kept divers of the passages.
But to deliver the Duke and his soldiers from that care, there came to him glad news from those that had charge to watch the same causey; how the Captain, having intelligence of the rendering of Guisnes, had conveyed himself with his small garrison, secretly, the same night [of the 22nd of January] by a secret passage over the marshes into Flanders. Whereby, the Duke, being now past care of any further siege to be laid in all that frontier, took order forthwith to seize the said little fort into his hands; as it was easy to do, when there was no resistance.