DUNN Barnwood Gloucester (General)
Gloucestershire Marriage Index 1754 to 1799
BARNWOOD
John DUNN married Prudence ATTWOOD lic - 18 January 1778
Gloucestershire Burial Index
BARNWOOD
John DUNN - 4 October 1818 age 68 - Barnwood
Prudence DUNN - 10 January 1826 age 75 - Barnwood
Sarah DUNN - 8 May 1823 - age 30 - Barnwood
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Can't see a Daniel SIERS marrying a Sarah DUN (20 February 1787 - as the CLDS site says)...
but Gloucester Marriage Index has
Samuel SIERS of Barnwood marrying Sarah DUN (Widow) - 20 February 1787