1850 Census
Fergerson    Polly           25  NC      MO      StClair; District 79
Fergerson    Rebecca         55  NC      MO      StClair; District 79
Fergerson    Wm F            32  KY      MO      StClair; District 79
1870 Census
Ferguson     John            47  Male    Scot   MO      St Clair Butler Twp
Ferguson     Allen           24  Male    Il     MO      St Clair Monegaw Twp
Ferguson     John C          24  Male    Mo     MO      St Clair Osceola
1900 Census
Ferguson        Bertha           5   Female  Mo      MO      St Clair Butler Twp
Ferguson        John S           38  Male    Il      MO      St Clair Butler Twp
Furgerson       John             27  Male    Mo      MO      St Clair Jackson twp
Ferguson        Marshall         24  Male    Mo      MO      St Clair Osceola
1910 Census
Fergason        J T              38  Male    Ia      MO      St Clair Butler Twp
Ferguson        C N              30  Male    MO      MO      St Clair; Butler Twp
Ferguson        William          48  Male    IA      MO      St Clair; Butler Twp
Ferguson        Charles F        57  Male    IA      MO      St Clair; Chalk Level Twp
1920 Census
Furgerson       William M        57  Male    Ia      MO      St Clair Butler
Ferguson        Charles A        47  Male    IA      MO      St Clair; Chalk Level
Ferguson        Dewey            19  Male    IA      MO      St Clair; Chalk Level

1850 St. Clair Co., Mo., Cut from Rives (Later Henry), in 1841
Dist. A.
William F. Ferguson  32 Ky.
Rebecca   55 NC
Polly    25 NC