 In 1216, when a Scottish army invaded the Eden valley and Alan of Galloway occupied Westmorland, Brougham Castle played no part in the county's defence, probably because it was unfinished. Construction would have been suspended until Alan retreated in 1217. Vieuxpont received control over the king's revenues from Cumberland, and these helped fund the construction of the castle. Brougham Castle was constructed in the northern part of the old Roman fort, and stone from the ruins was probably used to help build the castle. When Robert de Vieuxpont died in 1228, his only son – John – was a minor, so his property was taken into the care a warden.
