He bent, therefore, all his endeavors to that purpose: he gave the duke every proof of friendship and regard: he even offered him the regency of France, which Philip declined: and that he might corroborate national connections by private ties, he concluded his own marriage with the princess of Burgundy, which had been stipulated by the treaty of Arras.
{1423.} Being sensible that, next to the alliance of Burgundy, the friendship of the duke of Brittany was of the greatest importance towards forwarding the English conquests; and that, as the provinces of France, already subdued, lay between the dominions of these two princes, he could never hope for any security without preserving his connections with them; he was very intent on strengthening himself also from that quarter.

The duke of Brittany, having received many just reasons of displeasure from the ministers of Charles, had already acceded to the treaty of Troye, and had, with other vassals of the crown, done homage to Henry V.in quality of heir to the kingdom: but as the regent knew that the duke was much governed by his brother, the count of Richemont, he endeavored to fix his friendship, by paying court and doing services to this haughty and ambitious prince.
Arthur, count of Richemont, had been taken prisoner at the battle of Azincour, had been treated with great indulgence by the late king, and had even been permitted on his parole to take a journey into Brittany, where the state of affairs required his presence.

The death of that victorious monarch happened before Richemont's return; and this prince pretended that, as his word was given personally to Henry V., he was not bound to fulfil it towards his son and successor; a chicane which the regent, as he could not force him to compliance, deemed it prudent to overlook.

An interview was settled at Amiens between the dukes of Bedford, Burgundy, and Brittany, at which the count of Richemont was also present:[*] the alliance was renewed between these princes: and the regent persuaded Philip to give in marriage to Richemont his eldest sister, widow of the deceased dauphin, Lewis, the elder brother of Charles.

Thus Arthur was connected both with the regent and the duke of Burgundy, and seemed engaged by interest to prosecute the same object, in forwarding the success of the English arms.
* Hall.fol.84.Monstrelet, vol.i.p 4.