The parliamentary borough, as defined by the Parliamentary Boundaries Act 1832, comprised the township of Morpeth and several surrounding townships, as well as the parish of Bedlington.
1868–1918
Under the Boundary Act 1868, the borough was expanded to include the townships of Cowpen and Newsham, which incorporated the town of Blyth.
Blyth and Bedlington formed the basis of the new constituency of Blyth. Newbiggin-by-the-Sea and the remainder (bulk) of the Rural District of Morpeth was transferred from Wansbeck, which was now abolished.
Abolition
On abolition in 1983, 6 rural wards to the north of Morpeth were transferred to Berwick-upon-Tweed. The remainder of the seat formed the basis of the re-established constituency of Wansbeck.
↑Craig, Fred W. S. (1972). Boundaries of parliamentary constituencies 1885-1972;. Chichester: Political Reference Publications. p.25. ISBN0-900178-09-4. OCLC539011.
↑Craig, F.W.S., ed. (1972). Boundaries of parliamentary constituencies 1985-1972. Chichester, Sussex: Political Reference Publications. pp.82, 140. ISBN0-900178-09-4.
↑"Morpeth". 3 April 2016. Archived from the original on 3 April 2016. Retrieved 13 September 2022.
↑Castlecomer was also elected for Ripon but there was a petition against his election there; he sat for Morpeth until the petition was withdraw, then chose to represent Ripon, a by-election was held for Morpeth
↑On petition, Eyre was declared not to have been duly elected, and his opponent Byron was seated in his place
↑Adopted the surname St Clair-Erskine, July 1789. Promoted to Lieutenant Colonel 1792, Colonel 1795.
Robert Beatson, A Chronological Register of Both Houses of Parliament (London: Longman, Hurst, Res & Orme, 1807)
D Brunton & D H Pennington, Members of the Long Parliament (London: George Allen & Unwin, 1954)
Cobbett's Parliamentary history of England, from the Norman Conquest in 1066 to the year 1803 (London: Thomas Hansard, 1808)
Craig, F. W. S. (1983) [1969]. British parliamentary election results 1918–1949 (3rded.). Chichester: Parliamentary Research Services. ISBN0-900178-06-X.