Not able to find him after 1920 census.
He was 10 years old in 1920 census born in Louisiana.
Have you checked the 1940 census,
or burial place of mother 1877-1941 & father 1872-1936?

also check familyserach.org
find-a-grave

or any other Louisiana webpages
http://www.usgwarchives.org/la/lafiles.htm