He lived with the exiled court of Margaret of Anjou at Bar until 1470, and took an active part in the diplomacy which led to the coalition of Warwick and Clarence with the Lancastrians and Louis XI., and indirectly to Edward IV.'s expulsion from the throne.
Near the town, round a point marked by an obelisk, was fought in 1471 the decisive battle between the houses of York and Lancaster, in which the earl of Warwick fell and the Lancastrians were totally defeated.
To the west on the borders of Shropshire is Blore Heath, the scene of a defeat of the Lancastrians by the Yorkists in 1459.
The Lancastrians were defeated in 1464 near Hexham, and legend says that it was in the woods round the town that Queen Margaret and her son hid until their escape to Flanders.
In politics, the queen-mother, who had the private guardianship of her boys, the king and the dukes of Albany and Ross, turned from the Lancastrian to the Yorkist side, while Kennedy and his party (Lancastrians) were accused of endangering Scotland to please France.