Perhaps you should try some spelling variations:
2c william » c william, 23 william, 24 william
21 william » 11 william, 23 william, 101 william
13 william » 3 william
51 william » 11 william, 7 william, 15 william
21 1799 » 11 1799, 29 1799, 31 1799

Try widening your search to All Fields.

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: %22pitt%((2c william) OR (((((((21 william) OR (((2 william) OR (13 william))))) OR (51 william))) OR (1 william)))) %21 1799-1806%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22pitt%((2c william) or (((((((21 william) or (((2 william) OR (13 william))))) or (51 william))) or (1 william)))) %21 1799-1806%22".
• Adding a wildcard symbol may retrieve word variants: %22pitt%((2c william) or (((((((21 william) or (((2 william) OR (13 william))))) or (51 william))) or (1 william)))) %21 1799-1806%22*.