1910 Census
Fergerson       Herman           37  Male    Il      SD      Walworth 2-Wd Mobridge
Ferguson        Jack             16  Male    Sd      SD      Walworth 2-Wd Selby
Forgerson       Ole              64  Male    Us      SD      Walworth Walworth Twp
1920 Census
Fergenson       Mildred          19  Female  Sd      SD      Walworth 2-Wd; Mobridge
Ferguson        Helen            72  Female  Il      SD      Walworth 3-Wd; Mobridge