1870 Census
Ferguson     Albert          18  Male    Il     IA      Poweshiek Jefferson Twp
Furguson     Franklin        33  Male    In     IA      Poweshiek Jefferson twp
Farguson     Ranson          42  Male    Nc     IA      Poweshiek Jefferson Twp
Fergason     John            40  Male    Irel   IA      Poweshiek Lincoln Twp
Fergason     Simon           32  Male    Irel   IA      Poweshiek Lincoln Twp
Fergason     William         26  Male    Norw   IA      Poweshiek Washington Twp
1900 Census
Fargerson       Mile             23  Female  KY      IA      Poweshiek 3-Wd Grinnell
Fargerson       Mile             23  Female  Ia      IA      Poweshiek 3-Wd Grinnell
Ferguson        Arthur R         19  Male    Ms      IA      Poweshiek Chester Twp
Ferguson        Eliza J          43  Female  Nh      IA      Poweshiek Chester Twp
Ferguson        Fred M           47  Male    In      IA      Poweshiek Chester Twp
Ferguson        Newton J         52  Male    Il      IA      Poweshiek Jackson Twp
Ferguson        Andrew D         42  Male    Ia      IA      Poweshiek Malcom Twp
1910 Census
Ferguson        F M              51  Male    Nh      IA      Poweshiek 1-Wd Grinnell
Ferguson        Eliza            53  Female  Wv      IA      Poweshiek Chester Twp
Ferguson        John W           49  Male    Il      IA      Poweshiek Jackson Twp
Ferguson        Oren             27  Male    Ia      IA      Poweshiek Sheridan Twp
1920 Census
Ferguson        Frederic M       64  Male    Nh      IA      Poweshiek 1-Wd; Grinnell
Ferguson        Horace           32  Male    Ia      IA      Poweshiek Barnes; Jackson
Ferguson        Orrin            37  Male    Ia      IA      Poweshiek Chester