I have unsourced information (some of it appearing on Ancestry) that Asenath A. Blann is the daughter of Silas Blann and Elizabeth Ann Averytt. I recently went to Bell's Cemetery in Alabama and viewed the headstones for Silias and Elizabeth. They stated that Silas died 4/2/1858 at age 64 and Elizabeth, wife of Silas, died October 20, 1882 at age 52 years. The book "Vital Data from Cemeteries in Dallas County, Alabama" indicates that Asenath was born March 20, 1828 and died February 16, 1871. That makes her born 2 years before her mother.

What am I missing?