Perhaps you should try some spelling variations:
erhard » gerhard (Expand Search)
erhardt » gerhardt (Expand Search), ehrhardt (Expand Search), eberhardt (Expand Search)
gerhardt » ggerhardt (Expand Search), gehrhardt (Expand Search), geberhardt (Expand Search), gerhard (Expand Search), eberhardt (Expand Search)
gebhardt » gerhard (Expand Search)
engelhardt » engelhard (Expand Search)
finckh" » finkh" (Expand Search)
finck" » fink" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: "(erhard OR (((erhardt OR (gerhardt OR gebhardt)) OR engelhardt) OR erhardt)) (finckh" OR finck")~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"(erhard OR (((erhardt OR (gerhardt OR gebhardt)) OR engelhardt) OR erhardt)) (finckh\" OR finck\")".
• Removing quotes may allow a broader search: (erhard OR (((erhardt OR (gerhardt OR gebhardt)) OR engelhardt) OR erhardt)) (finckh OR finck ).
• Adding a wildcard symbol may retrieve word variants: "(erhard OR (((erhardt OR (gerhardt OR gebhardt)) OR engelhardt) OR erhardt)) (finckh" OR finck")*.