1860 Census
Furgerson    Isaac           35  Male    Pa     IA      Carroll Jasper Twp
1870 Census
Ferguson     Nancy           34  Female  Pa     IA      Carroll Carroll
Ferguson     Isaac           45  Male    Pa     IA      Carroll Union Twp
1900 Census
Furgerson       David            38  Male    Il      IA      Carroll Sheridan Twp
Furgerson       Robert           62  Male    Scot    IA      Carroll Sheridan Twp
1910 Census
Farguson        Will             51  Male    Oh      IA      Carroll Grant Twp
Ferguson        David            50  Male    Cana    IA      Carroll Sheridan Twp
Ferguson        Robert           83  Male    Scot    IA      Carroll Sheridan Twp
Furgeson        Thomas           58  Male    Irel    IA      Carroll Union Twp
1920 Census
Ferguson        John B           37  Male    Cana    IA      Carroll 1-Wd; Carroll
Fergerson       Will             61  Male    Oh      IA      Carroll Grant
Ferguson        David J          58  Male    Il      IA      Carroll Sheridan
Furguson        Thomas           68  Male    Irel    IA      Carroll Union