 This region was subdivided into baronies, the easternmost of which became the Barony of Gilsland, apparently named after an individual, although sporadic speculation by historians has failed to conclusively identitify him.This barony was ruled by Lord William Howard during the 16/17th century and stretched from Carlisle to the present-day village of Gilsland.Gilsland Spa, a locally renowned mineral spring, was named from the Barony and the name was transferred from there to the village, although most of the population live on the Northumberland side, outside the original borders of the Barony.