John, We will need to link up your grandfather. Suggest you do an extensive search through Family Search, Rootsweb and Ancestry.com
All we know is that John Robinson b.1812 received a land grant for 80 acres in 1841 in Cleveland, Bradley County, TN. Property was in the Ocoee District which had been ceded by the Cherokee Indians in 1836. John and Nancy are buried in a Lebanon Cemetery near Tunel Hill RD. in the Ocoee District.
We have no record of any sons remaining in Bradley County,TN after 1880. John Wesley, my ggrandfather and Robert Alexander my gguncle moved to north GA. Hiram went to Texas and Oklahoma. None of the children of John and Nancy have the name you mention. However, we do not have any genealogy for WIlliam Robinson b.abt 1843 and James Robinson b. abt 1839. This is the best I can do.
William Frederick Robinsonfrobi19807@aol.com