Henry I: King of England and Duke of NormandyJudith Green argues that although Henry's primary concern was defence of his inheritance, it did not preclude expansion where circumstances were propitious, notably into Welsh territory. His skillful dealings with the Scots permitted consolidation of Norman rule in the northern counties of England, while in Normandy every sinew was strained to defend frontiers through political alliances and stone castles. Green claims that although Henry's own