. ▁The ▁opposition ▁m elt ed ▁away , ▁with ▁some ▁of ▁them ▁– ▁including ▁Ed gar ▁– ▁taking ▁refuge ▁at ▁the ▁court ▁of ▁Mal col m ▁III . ▁In ▁the ▁winter ▁of ▁ 1 0 6 9 - 7 0 ▁William ▁led ▁his ▁army ▁on ▁a ▁campaign ▁of ▁terror ▁in ▁the ▁English ▁north ▁country ▁in ▁an ▁action ▁known ▁as ▁the ▁H arrow ing ▁of ▁the ▁North . ▁ ▁In ▁ 1 0 7 1 ▁Scotland , ▁Mal col m ▁married ▁the ▁ Æ th eling ' s ▁sister , ▁Margaret . ▁The ▁marriage ▁of ▁Mal col m ▁to ▁Ed gar ' s ▁sister ▁prof ound ly ▁affected ▁the ▁history ▁of ▁both ▁England ▁and ▁Scotland . ▁The ▁influence ▁of ▁Margaret ▁and ▁her ▁sons ▁brought ▁about ▁the ▁Ang lic isation ▁of ▁the ▁Low lands . ▁ ▁Ed gar ▁sought ▁Mal col m ' s ▁assistance ▁in ▁his ▁struggle ▁against ▁William . ▁ ▁Then ▁with ▁Ed gar ▁as ▁an ▁al ly , ▁Mal col m ▁was ▁able ▁to ▁use ▁the ▁ ▁opportunity ▁to ▁try ▁and ▁expand ▁his ▁kingdom ▁to ▁include ▁the ▁northern ▁disput ed ▁count ies ▁of ▁England . ▁In ▁ 1 0 7 1 ▁he ▁inv aded ▁C umber land , ▁possibly ▁to ▁establish ▁the ▁border ▁between ▁Carl is le ▁and ▁New castle . ▁He ▁har ried ▁the ▁far ms ▁and ▁villages , ▁carrying ▁off ▁so ▁many ▁people ▁that ▁according ▁to ▁one ▁chron ic ler , ▁there ▁was ▁no ▁village ▁or ▁even ▁large ▁house ▁in ▁southern ▁Scotland ▁that ▁did ▁not ▁afterwards ▁have ▁an ▁English ▁servant