Perhaps you should try some spelling variations:
"delle-isle, charles louis auguste fouque / duc de / 1684-1761" » "delle-isle, charles lord auguste fouque / duc de / 1684-1761", "delle-isle, charles lucas auguste fouque / duc de / 1684-1761"
"delle-isle, charles louis auguste fouquet / duc de / 1684-1761" » "delle-isle, charles lord auguste fouquet / duc de / 1684-1761", "delle-isle, charles lucas auguste fouquet / duc de / 1684-1761", "delle-isle, charles louis auguste bouquet / duc de / 1684-1761"

Try widening your search to All Fields.

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: "((\"delle-isle, charles louis auguste fouque / duc de / 1684-1761\") OR (\"delle-isle, charles louis auguste fouquet / duc de / 1684-1761\"))".
• Removing quotes may allow a broader search: (( delle-isle, charles louis auguste fouque / duc de / 1684-1761 ) OR ( delle-isle, charles louis auguste fouquet / duc de / 1684-1761 )).
• Adding a wildcard symbol may retrieve word variants: (("delle-isle, charles louis auguste fouque / duc de / 1684-1761") OR ("delle-isle, charles louis auguste fouquet / duc de / 1684-1761"))*.