It is unclear why Charles Jefferson Ewing, who was born in 1861 is not listed in the 1870 census; according to Find-A-Grave, Charles died in 1938 in Tulsa. 
A 1900 U. S. Census Lists Charles Jefferson Ewing living in Weatherford, Custer Co., Oklahoma with his wife and 4 children. 
Children of Charles Jefferson & Harriet "Hattie" Bowling Ewing:
Jacob "Jake" Ewing (1893 - 1923
Grace A. Ewing (1896 - 1976); married J.C. Jennings on June 25, 1918, Muskogee, Oklahoma
Harriet "Hattie" Ewing (1900-1962); married H.E. Bradshaw on March 4, 1920, Tulsa, Oklahoma
Estile Charles Ewing (1904 - 1956)
Richard Garlington Ewing (1909-1967)