Dettmer was educated at the University of Kansas and ordained in 1991. After a curacy in Ilfracombe he was Domestic Chaplain to the Bishop of Exeter from 1994 to 1998. He was then Priest in charge of Thorverton and Stoke Canon until 2010 when he became Rector of Brampford Speke.
- "Douglas James DETTMER - Personal Appointments (free information from Companies House)". beta.companieshouse.gov.uk. Retrieved 26 September 2017.
- "Douglas James Dettmer". Crockford's Clerical Directory (online ed.). Church House Publishing. Retrieved 26 September 2017.
- ‘DETTMER, Ven. Douglas James’, Who's Who 2017, A & C Black, an imprint of Bloomsbury Publishing plc, 2017; online edn, Oxford University Press, 2016 ; online edn, Nov 2016 accessed 26 Sept 2017
- "Brampford Speke | A church near you". achurchnearyou.com. Retrieved 26 September 2017.
|Church of England titles|
John Edmund Frank Rawlings
| Archdeacon of Totnes
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