Searching for info on Cornelius Duff, listed in the 1800 PA Census Index, Berks CO, PA on pg. 581.

P>From the Index, is shows he had two free white males 16-26, one free white male 45 and over, and one free white female 45 and over.

I'm trying to connect a William C. Duff (birthyear unknown) to his parents. William C. Duff married Catharine Benjamin on April 7, 1806 in Perkiomen, Pa (Montgomery Co. just outside of Philadelphia, PA.) Cornelius is a possible father.

Any information welcome.

Thanks
Monica