There were three Eliza Bell's who were born in North Carolina in 1842.
Eliza Bell wife of Joseph Bell of Smithville, Brunswick, NC in the 1880 US Census.
Eliza W Bell wife of Marshall T Bell, Mocksville, Davie, NC in the 1880 US Census. Marshall was 47, Eliza W was 38, son Marshall W was 15, son Frank M was 13, Eliza H was 7 and Maggie R was 4. All were born in North Carolina.
Eliza R Bell was 8 in the 1850 US Census. Her father Robert Bell was 40, mother Elizabeth Bell was 35. David L Bell was 13, Nancy L Bell was 12, Cloe A Bell was 6, Warren W Bell was 4 and Alexander W Bell was 2. All in this family were born in North Carolina.