Perhaps you should try some spelling variations:
"frederick henri pierre" » "frederick hendrick pierre", "frederick earl pierre", "frederick ahen pierre", "frederick henry pierce", "frederick bei pierre", "frederick henri sieur"
"frederick henry piers" » "frederick earl piers", "frederick howard piers", "frederick handel piers", "frederick henry tiers", "frederick henry piero"

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: (("frederick henri pierre") OR ("frederick henry piers")).
• Removing quotes may allow a broader search: (( frederick henri pierre ) or ( frederick henry piers )).
• Adding a wildcard symbol may retrieve word variants: (("frederick henri pierre") or ("frederick henry piers"))*.