Edward Barnett hanged Monmouth 1829 (General)
As Esther STEVENS was buried 1 October 1828 - murdered (on the transcripts) by W DONNELL?
and Mary BARNETT (residence KYMIN) was buried 1 June 1828 - this would appear to be the wife of Edward.
If you use the Advance Search i.e. burials etc - there is a small group of BARNETT's residence: Kymin. Use the Soundex as the surname is spelt or transcribed in other ways.