Donna I'm not related to this family, but I have helped a friend research John Milton Moseby, Cornelius's brother, who eventually moved to Oklahoma.
According to our research, Cornelius and Susannah (Lacy) Moseby/Mosby are shown on the 1850 census of Adair County KY with one child- Latisha J.- born 1848. His father was Micajah ("Cager") Mosby and his mother was Nancy Berry. Her father was Henry Lacy.
Are the other names that you listed their children?