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"Historic Churches". Rectorial Benefice of Barry. 6 August 2020. Archived from the original on 2 January 2022. Retrieved 2 January 2022.
coflein.gov.uk
"St Lythans Chambered Long Cairn, Maesyfelin; Gwal-y-Filiast". The Royal Commission on the Ancient and Historical Monuments of Wales website. Royal Commission on the Ancient and Historical Monuments of Wales. 26 July 2007. Archived from the original on 23 December 2012. Retrieved 8 August 2008.
"FRIAR'S POINT MOUND (CAIRN III)". The Royal Commission on the Ancient and Historical Monuments of Wales website. Royal Commission on the Ancient and Historical Monuments of Wales. 26 July 2007. Archived from the original on 23 December 2012. Retrieved 11 September 2008.
"BARRY ISLAND, WELL SITE". The Royal Commission on the Ancient and Historical Monuments of Wales website. The Royal Commission on the Ancient and Historical Monuments of Wales. 2008. Retrieved 14 September 2008.[permanent dead link]