Harry W. and Katie Lou Stagner GA, MO, TX

I am searching for information on the parents of James Benjamin Stagner b. 5/6/1919 d. 7/4/1976.I know his mother was Katie Lou and I think her maiden name was Flannigan or Flanagan.Possibly her husband was Harry W. Stagner.I have a copy of a 1930 census of Prairie Township, Washington County, Texas which shows Harry to be 41 and Katie to be 34.It lists children as Louise M. and J. B.Katie and Harry married about 1913, but I have no record of Harry or Katie other than that.From the census it says that Katie was born in Georgia and Harry was born in Missouri.If anyone can please help I would appreciate it because I cannot find anything else on this family.