William,
You did not say which Kingswood you mean but in freebmd at
http://www.freebmd.org.uk/cgi/search.pl you will find a Samuel Palmer's marriage registration in
Bristol during 1840. One of the persons he could have married was a
Hester but the only way to find out is to obtain the m-cert. Searching all the possible church records is just not practicable.
O