The besieged had thrown a bridge of boats over the Marne, for their convenience of passing and repassing, and had erected a bulwark at each end, the command of which was intrusted to a certain number of men at arms.
While these things were passing, the king of France assembled about eight hundred combatants, whom he dispatched to Orleans, under the command of the marshal de Bousac, the bastard of Orleans, the lord de Gaucourt, Rodrique de Villandras, the lord de Saintrailles, and other captains of renown, to throw succours into the town of Lagny.
They advanced in a body to Melun, where they crossed the Seine, and thence, through Brie, toward Lagny, being daily joined by forces from their adjoining garrisons. In the mean time, the duke had so hardly pressed the garrison that they had offered to capitulate when the French forces arrived.
The duke prepared with diligence to offer battle to the French, and sent for reinforcements from all quarters. He ordered his heralds at arms to signify to the French his willingness to combat them and their allies, if they would fix on the time and place. To this they returned no other answer than that, under the pleasure of God and of our blessed Saviour, they would not engage in battle but when it should be agreeable to themselves, and that they would bring their present enterprise to a happy conclusion.
The French advanced in handsome array, in three divisions, to a small river within a quarter of a league of the town; and the duke of Bedford, having drawn up his army in three divisions also, marched thither to defend the passage. When the two armies were near, several severe skirmishes took place at different parts: especially on the quarter where the heir of Warwick and the lord de l'Isle-Adam were posted, a sharp attack was made by Rodrique de Villandras, the lord de Saintrailles, and other captains, who were escorting a convoy of provision for the town.
In spite of their adversaries, they forced a passage for part of their convoy to the very gates, and drove in from twenty to thirty bullocks, a number of sacks of flour, and a reinforcement to the garrison of about four score men at arms; but this was not effected without great effusion of blood, for very many were killed and wounded on both sides.
On the part of the French was killed the lord de Saintrailles, eldest brother to Poton de Saintrailles. In another quarter, where sir Thomas Kiriel, sir John bastard of St Pol, the lord d'Amont, and Philibert de Vaudroy were posted, many gallant deeds were done, and several killed and wounded on both sides. The English lost there a gentleman called Odart de Remy.
These skirmishes lasted nearly till vespers,—and as it was St Laurence's day in August, and very hot, the two armies suffered greatly from it. The french captains, perceiving that they could not gain any advantage, for the English and Burgundians were strongly posted, retreated with their army to Cressy in Brie, where they halted for the night, and thence marched to Château Thierry and to Vitry-le-François, where they staid four days.
The duke of Bedford, knowing that the French intended entering the Isle of France, and fearing they might conquer some of his towns, decamped in no very orderly manner from before Lagny, for many things were left behind by him, and advanced towards Paris. Having collected his men, he followed the French to offer them battle again; but they sent for answer, that they had gained what they had come for.