Sorry, ignore my last message - I missunderstood the question.
Information given on a marriage certificate is what is given by the couple
who are getting married. In my own case my grandmother put her father down as
deceased even though he was very much alive! She had not had contact with
her family and probably assumed (or wished) he was dead.
Surrey / UK
Researching in Pembrokeshire: DAVIES (of St. Ishmael's/Talbenny), FEILD,
FERRIOR, ELLIOT (of Steynton/Amroth), THOMAS (of Marloes/Llanstadwell), CORNOCK,
HIER, ROWE (of Penally) and far too many others to list.
Researching in Ireland : Wexford - Ballycanew area: CRANWILL / CRANWELL,
KEEGAN, CONNORS / CONNOR.
Researching in Ireland : ST. LEGER & HEVENINGHAM