I think I found the right Fred Foust finally, here is the info, maybe someone can help me make sure it is right. I had almost given up.
I found a Redic Foust (possible Fredrick Foust) married to Rebecca February 2, 1879 Wells Indiana.
!880 Census- Wells Indiana Jackson Township List: Redic Foust head Rebeccawife Ruthie V.infant daughter
1900 Census- Grant Co. Indiana Marion City Township List: Fred Foust HeadBorn Feb, 1856 RebeccawifeBorn Nov. 1855 FrancissonBorn Dec. 1883 HermansonBorn Aug. 1891 portiadaughter Born Nov. 1893 FredsonBorn Sept. 1896 it also says they had 7 children 5 which are living.
1910 Census Craighead Co. Arkansas Greenfield Township List: Fred Foust Head Fred Jr.son
1910 Census Craighead Co. Arkansas Greenfield Township List: Frank Foust head HermanBrother
1920 Census Craighead Co. Arkansas Greenfield Township List: Fred Foust Head EmmaWife
1920 Census Poinsette Co. Arkansas greenfield List: Frank Foust Head TexWife Carlson Ruthdaughter Garlandson Charlieson Gladdisdaughter
1930 Census Craighead Co. Arkansas Powell Township List: Fred FoustHead EmmaWife
1930 Census Poinsette Co. Arkansas Greenfield Township List: Frank Fousthead Texwife Carlson Ruthdaughter Garlandson Charlieson Gladysdaughter Jewelldaughter Williamson Lelandson Melvinson Louisadaughter Last son born in 1933