Perhaps you should try some spelling variations:
thomas nicholson » thomas richardson, thomas wilson, james nicholson
thomas dickson » thomas jackson, thomas dawson, thomas denison
1st baroness » 1st baron, _ baroness
1st baronet » 1st baron, first baronet, colt 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 nicholson, 1st baronet ) OR ( sir thomas nicholson, 1st baroness ))) OR ( sir thomas dickson, 1st baronet )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( sir thomas nicholson, 1st baronet ) OR ( sir thomas nicholson, 1st baroness ))) or ( sir thomas dickson, 1st baronet ))".
• Adding a wildcard symbol may retrieve word variants: (((( sir thomas nicholson, 1st baronet ) OR ( sir thomas nicholson, 1st baroness ))) or ( sir thomas dickson, 1st baronet ))*.