Roger's son Robert inherited and improved the castle. Robert was a favourite of King John, and hosted him at Warkworth Castle in 1213. The castle remained in the family line, with periods of guardianship when heirs were too young to control their estates. King Edward I stayed overnight in 1292 and John de Clavering, a descendant of Roger fitz Richard, made the Crown his inheritor. With the outbreak of the Anglo-Scottish Wars, Edward II invested in castles including Warkworth where he funded the strengthening of the garrison in 1319. Twice in 1327 the Scots besieged the castle without success.