 Lying within the historic county boundaries of Lancashire since the early 12th century , Oldham was recorded in 1212 as being one of five parts of the thegnage estate of Kaskenmoor , which was held on behalf of King John by Roger de Montbegon and William de Nevill . The other parts of this estate were Crompton , Glodwick , Sholver , and Werneth . Oldham later formed a township within the ancient ecclesiastical parish of Prestwich @-@ cum @-@ Oldham , in the hundred of Salford . 
