- Original source material relating to Didmarton, and other parishes in Diocese of Gloucester may be found at the Gloucestershire Archives.
- The transcription of the section for Didmarton from the National Gazetteer (1868) provided by Colin Hinson.
- "Rectory, united with Oldbury-on-the-Hill, 1735). United
with civil parish of Oldbury-on-the-Hill, 1883."
(Ref: Guide to the Parish Records of the City of Bristol and the County of Gloucester; I. Gray & E. Ralph, 1963)