1840 Census
Ferguson            Isaac                 WI Terr. Iowa; Eastern Division
1850 Census
Fergison        Anna            29  Norway  WI      Iowa; Dodgeville
Fergison        Johanah         27  Norway  WI      Iowa; Dodgeville
Furguson        H H             26  KY      WI      Iowa; Highland
Furguson        James           33  NY      WI      Iowa; Highland
Furguson        Sarah A         20  IN      WI      Iowa; Highland
1860 Census
Fargarson    Christian       30  Male    Norw   WI      Iowa Dodgeville
Furgurson    Elizabeth       42  Female  Norw   WI      Iowa Dodgeville
Fergerson    Gulie           36  Male    Norw   WI      Iowa Dodgeville
Fargerson    Lars            68  Male    Norw   WI      Iowa Dodgeville
Fargerson    Lars            68  Male    Norw   WI      Iowa Dodgeville
Ferguson     Ole             75  Male    Norw   WI      Iowa Linden
1900 Census
Furgerson       Irene            18  Female  Wi      WI      Iowa Eden
Ferguson        Lowell           10  Male    Il      WI      Iowa Wyoming
1910 Census
Fargerson       John             37  Male    Wi      WI      Iowa Eden
Fargerson       John             37  Male    Wi      WI      Iowa Eden
Ferguson        Clarence M       18  Male    Nd      WI      Iowa Wyoming