Perhaps you should try some spelling variations:
"hugh griffiths, mark griffiths" » "g griffiths, mark griffiths", "nach griffiths, mark griffiths", "hannah griffiths, mark griffiths", "hugh griffiths, mary griffiths", "hugh griffiths, mrs griffiths"
"hugh griffiths, a griffiths" » "g griffiths, a griffiths", "nach griffiths, a griffiths", "hannah griffiths, a griffiths", "hugh griffiths, a griffith", "hugh griffiths, _ griffiths", "hugh griffiths, d griffiths"
"hughes griffith, a griffiths" » "hughes griffith, a griffith", "hughes griffith, _ griffiths", "hughes griffith, d 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: (("hugh griffiths, mark griffiths") OR ((("hugh griffiths, a griffiths") OR ("hughes griffith, a griffiths")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"hugh griffiths, mark griffiths\") or (((\"hugh griffiths, a griffiths\") OR (\"hughes griffith, a griffiths\"))))".
• Removing quotes may allow a broader search: (( hugh griffiths, mark griffiths ) or ((( hugh griffiths, a griffiths ) OR ( hughes griffith, a griffiths )))).
• Adding a wildcard symbol may retrieve word variants: (("hugh griffiths, mark griffiths") or ((("hugh griffiths, a griffiths") OR ("hughes griffith, a griffiths"))))*.