Perhaps you should try some spelling variations:
"sir thomas nicholson, first baronet" » "sir thomas richardson, first baronet", "sir thomas dickson, first baronet", "sir james nicholson, first baronet", "sir thomas nicholson, first barrier", "sir thomas nicholson, first tyrone"
"sir thomas jackson, 1st baronet" » "sir thomas clarkson, 1st baronet", "sir thomas johnson, 1st baronet", "sir thomas jackson, 1st baroness", "sir thomas jackson, 1st baron", "sir thomas jackson, colt baronet"
"sir thomas wilson, first baronet" » "sir thomas wilson, first barrier", "sir thomas wilson, first tyrone"

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 nicholson, first baronet") OR ("sir thomas wilson, first baronet"))) OR ("sir thomas jackson, 1st baronet")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"sir thomas nicholson, first baronet\") OR (\"sir thomas wilson, first baronet\"))) or (\"sir thomas jackson, 1st baronet\"))".
• Removing quotes may allow a broader search: (((( sir thomas nicholson, first baronet ) OR ( sir thomas wilson, first baronet ))) or ( sir thomas jackson, 1st baronet )).
• Adding a wildcard symbol may retrieve word variants: (((("sir thomas nicholson, first baronet") OR ("sir thomas wilson, first baronet"))) or ("sir thomas jackson, 1st baronet"))*.