Elizabeth Clarke nee Griffiths c.1788 (General)
Don't know if these events are any help.
Marriage James Griffiths and Margaret Roberts Parish Newland/Bream 1Nov1783. Witness James Robins.
Marriage Elizabeth Griffiths and William Clarke Parish Newland (Both of Hundred of St Briavel's) 12July1815. Witnesses George Kear and Thomas Bond. Thos. Bond not significant, he was a sidesman or similar at All Saints.
Good Luck,
Roger