Perhaps you should try some spelling variations:
mark griffiths » mrs griffiths, a griffiths
mary griffiths » mrs griffiths, a griffiths
g griffiths » _ griffiths, a griffiths, e griffiths
d griffiths » _ griffiths

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((g griffiths) OR (d griffiths)), ((mark griffiths) OR (mary griffiths)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((g griffiths) OR (d griffiths)), ((mark griffiths) or (mary griffiths))".
• Adding a wildcard symbol may retrieve word variants: ((g griffiths) OR (d griffiths)), ((mark griffiths) or (mary griffiths))*.