I'm trying to find someone who knows about the William Black on the 1810 and 1820 census in Argyle, Washington Co, NY.
My ancestor, James Harper came from County Tyrone to NY in 1812, bringing his wife Elizabeth Black and their oldest children. The rest of their children were born in Washington Co, NY.
On the 1820 census James "Hopper" is listed next door to William Black and I think from age groupings William is probably the brother of Elizabeth Black Harper. And, he may be the reason the Harpers migrated to NY.
I understand to do Irish research I need more than the county in Ireland, the parish is needed, too,. So any help or clues would be appreciated.