Perhaps you should try some spelling variations:
"john wallis callcott" » "john wallis calcott", "john wallis caldecott", "john wallis talcott"
"john william tapscott" » "john william talcott"
"john william cannicott" » "john william kennicott", "john william winnicott", "john william caldicott"

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 wallis callcott") OR ((("john william tapscott") OR ("john william cannicott")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"john wallis callcott\") or (((\"john william tapscott\") OR (\"john william cannicott\"))))".
• Removing quotes may allow a broader search: (( john wallis callcott ) or ((( john william tapscott ) OR ( john william cannicott )))).
• Adding a wildcard symbol may retrieve word variants: (("john wallis callcott") or ((("john william tapscott") OR ("john william cannicott"))))*.