Perhaps you should try some spelling variations:
cockson edward » cocker edward, johnson edward, copleston edward
lawson edward » larson edward, rawson edward, alanson edward
marson edward » marston edward, manson edward, mason edward
john cockson » john jackson, john colson, john dickson
john marson » john marston, john mason, john marsom

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: (( john cockson edward ) OR ((( john lawson edward ) OR ( john marson edward )))).
• Adding a wildcard symbol may retrieve word variants: (( john cockson edward ) or ((( john lawson edward ) or ( john marson edward ))))*.