Perhaps you should try some spelling variations:
morwenna griffiths » owen griffiths
gwenny griffiths » green griffiths, owen griffiths, gemma griffiths
henry griffiths » henry griffin, mary griffiths, hannah 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: ((((gwenny griffiths) OR (morwenna griffiths))) OR (henry griffiths)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((gwenny griffiths) OR (morwenna griffiths))) or (henry griffiths))".
• Adding a wildcard symbol may retrieve word variants: ((((gwenny griffiths) OR (morwenna griffiths))) or (henry griffiths))*.