H. Robert Whitten was born 1903 in NY and was in Knoxvill, TN at the time of the US Census, 1940.
Robert E. Whitten was born in KY in 1898 and live in Lincoln, TN in 1920.
Robert Whiton was born in NC 1904, married Viola, and lived in Unicoi, TN 1940.
Are any of these, the person you are asking about? If not, do you have a birth year and location?