1910 Census
Ferguson        William T Rev    42  Male    Pa      SD      Gregory 2-Wd Gregory
Furguson        C L              36  Male    Ia      SD      Gregory Fairfax Pct
Ferguson        George P         42  Male    Il      SD      Gregory Gregory Pct
Furgeson        Seraphin         47  Male    Cana    SD      Gregory Whetstone Pct
1920 Census
Ferguson        Bessie           30  Female  Ne      SD      Gregory 1-Wd; Burke
Ferguson        Louis            46  Male    Ia      SD      Gregory 1-Wd; Fairfax
Ferguson        Maud             14  Female  Sd      SD      Gregory 3-Wd; Dallas