In the 1850 Independence County, Arkansas Census, Nancy Nelson (born 1840 in Tennessee), is listed in the household of Reuben and Nancy Nelson, the sibling of Reuben Nelson(2) and Mary Nelson. They live in close proximity to Martin Nelson (which I know from family history to be an older sibling). In the 1860 census, Mary Nelson is married to James Blackwell of Mountain Township, and again, Martin Nelson lives in close proximity. I have not found Nancy Nelson in the 1860 census. In the 1870 census of Cedar Creek Township, Crawford County, Martin Nelson lives next door to N.A.Blackwell (female, head of house, born in 1840), and R.R. Nelson (same age as Reuben Nelson(2), born 1838, Tennessee)is a farm laborer living with her. It seems obvious to me that this is Nancy Nelson Blackwell, living with one brother and next door to another brother. My question is as follows: Does anyone know which Blackwell Nancy Nelson married? Or the name of the female child living with her listed as M.C., age 3?