Tracing family lines across the rupture of slavery, migration, and incomplete records.
Because enslaved people were not named in most federal records before 1870, genealogical research before that date depends heavily on plantation and estate records, bills of sale, and church membership rolls rather than the census.
Researchers cross-reference surnames across freedmen's records, church rolls, land purchases, and marriage registers to rebuild family connections that slavery deliberately obscured.
Where a living family maintains its own genealogy, that family's own record is treated as an essential source and is cross-checked against, rather than overridden by, the archival trail.