Grindonrigg tower (Duddo) - Source of Reference
The information on this website is based on a range of published and unpublished works. Below is a list of the source of information used in writing this record.
(1) Hodgson, J.C., 1828. History of Northumberland, part 3, volume 2 (Newcastle upon Tyne), 191.
(2) Raine, J., 1852. The History and Antiquities of North Durham (London), 19 and 318.
(3) Field Investigators Comments F1 ASP 10-NOV-1955
(4) Field Investigators Comments F2 DK 13-JAN-1967
(5) This record includes National Record of the Historic Environment Information provided by Historic England on 4 January 2021 licensed under the Open Government Licence [http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/]
(5a) Dodds, J F, 1999. Bastions and Belligerents: Medieval Strongholds in Northumberland, p45
(5b) Cathcart King, David J, 1983. Castellarium anglicanum : an index and bibliography of the castles in England, Wales and the Islands. Volume II : Norfolk-Yorkshire and the islands, p348