▁a ▁town ship ▁within ▁the ▁ancient ▁parish ▁of ▁Ro ch dale , ▁in ▁S alf ord ▁hundred . ▁During ▁this ▁time , ▁Cast leton ▁stretch ed ▁beyond ▁what ▁is ▁now ▁recogn ised ▁as ▁its ▁boundaries , ▁including ▁with ▁it ▁the ▁local ities ▁of ▁Bal der stone , ▁Captain ▁F old , ▁Hart ly , ▁Mar land ▁and ▁New burn . ▁ ▁In ▁ 1 8 6 5 , ▁part ▁of ▁Cast leton ▁was ▁transferred ▁to ▁the ▁newly ▁created ▁Municipal ▁Bor ough ▁of ▁Ro ch dale , ▁and ▁following ▁local ▁government ▁re organisation ▁in ▁ 1 8 9 4 , ▁Cast leton , ▁though ▁lying ▁wh olly ▁within ▁the ▁administrative ▁county ▁of ▁Lanc ash ire , ▁remained ▁divided ▁on ▁this ▁basis , ▁forming ▁two ▁local ▁government ▁districts ; ▁" Count y ▁Bor ough ▁of ▁Ro ch dale " ▁and ▁" Cast leton - by - R och dale ". ▁Cast leton - by - R och dale ▁was ▁renamed ▁to ▁" Cast leton ▁Urban ▁District " ▁in ▁ 1 8 9 6 , ▁and ▁four ▁years ▁later ▁in ▁ 1 9 0 0 , ▁was ▁abol ished ▁( as ▁part ▁of ▁a ▁mut ual ▁agreement ▁between ▁local ▁coun c ill ors ) ▁split ▁and ▁transferred ▁to ▁the ▁neighbour ing ▁Ro ch dale ▁and ▁Hey wood ▁local ▁government ▁districts . ▁ ▁As ▁part ▁of ▁the ▁prov isions ▁of ▁the ▁Local ▁Government ▁Act ▁ 1 9 7 2 , ▁the ▁former ▁county ▁bor ough s ▁and ▁urban ▁districts ▁were ▁abol ished , ▁and ▁Cast leton ▁was