Perhaps you should try some spelling variations:
"sir richard brown, keith baronet" » "sir richard brown, keith barney", "sir richard brown, kerse baronet", "sir richard brown, keith bart"
"sir richard brown, 8th baronet" » "sir richard brown, 4th baronet", "sir richard brown, bath baronets", "sir richard brown, rich baronet"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"sir richard brown, 8th baronet\") OR (\"sir richard brown, keith baronet\"))".
• Removing quotes may allow a broader search: (( sir richard brown, 8th baronet ) OR ( sir richard brown, keith baronet )).
• Adding a wildcard symbol may retrieve word variants: (("sir richard brown, 8th baronet") OR ("sir richard brown, keith baronet"))*.