I am a great great granddaughter of Benjamin Franklin Dennis. He is listed on the 1850 census as being born in North Carolina in 1803. He migrated to IL sometime in the 1810's or 20's. He married Celia Cox in St. Clair County, IL. Then moved to Knox County, MO as a 57 year old where he died in 1872. I cannot find any information on his parents. Can anyone help?