Perhaps you should try some spelling variations:
"sir thomas jackson, first baronet" » "sir thomas clarkson, first baronet", "sir thomas johnson, first baronet", "sir thomas jackson, first barrier", "sir thomas jackson, first tyrone"
"sir thomas wilson, colt baronet" » "sir thomas wilson, holte baronet", "sir thomas wilson, cox baronet", "sir thomas wilson, cobb baronet"

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: (("sir thomas wilson, colt baronet") OR ("sir thomas jackson, first baronet")).
• Removing quotes may allow a broader search: (( sir thomas wilson, colt baronet ) or ( sir thomas jackson, first baronet )).
• Adding a wildcard symbol may retrieve word variants: (("sir thomas wilson, colt baronet") or ("sir thomas jackson, first baronet"))*.