I am descendant of Robert Morrison and Elizabeth Culbertson.
On your find a grave uploads, you have Samuel Morrison (1758-1812/4) as brother of my Robert.
I thought Robert migrated about 1765 with a ouple of his older brothers. Robert fought in Rev. War.
While I track Samuel and his kids, at least 1st 3 (Elizabeth, Nancy and Jane) are listed as born in Ireland. This would mean Samuel did not migrate until 1790s.
Do you have any records on Samuel?