David & Melinda Massengill Family (1880 Anderson Co., TN)

The 1880 Anderson County, TN census includes a family headed by David (40) and Melinda (38) Massengill.Their children are Nancy A. (14), William N. (10), Mary M. (9), Talitha B. (7), John F. (5), Martha L. (2), and Sarelda T. (10 months).I believe this family was in Campbell County, TN in 1870.The surname is spelled Masingil there.Can anyone tell me about David's parents and siblings?