1870 Census
Fergerson    William R       40  Male    Oh     MT      Deer Lodge Beartown
Fergerson    Robert          33  Male    Scot   MT      Deer Lodge Emmitsburg
Fergerson    William         28  Male    Ny     MT      Deer Lodge Lincoln
1900 Census
Ferguson        Julus D          32  Male    Irel    MT      Deer Lodge Montana State Penitentiary
Furgerson       America          40  Female  Va      MT      Deer Lodge Warm Springs Twp
Fergerson       J B              56  Male    Mo      MT      Deer Lodge Warm Springs Twp
Furgerson       Pat              66  Male    Irel    MT      Deer Lodge Warm Springs Twp
1910 Census
Ferguson        N L              39  Male    Oh      MT      Deer Lodge 4-Wd Anaconda
Ferguson        America Mrs      55  Female  Va      MT      Deer Lodge Warm Springs School Dist
Ferguson        Pat              74  Male    Irel    MT      Deer Lodge Warm Springs School Dist
1920 Census
Ferguson        John             54  Male    Scot    MT      Deer Lodge 4-Wd; Anaconda; 7-Pct
Ferguson        Norman L         50  Male    Oh      MT      Deer Lodge 4-Wd; Anaconda; 7-Pct
Ferguson        Winfred R        32  Male    Mt      MT      Deer Lodge 5-Wd; Anaconda; 8-Pct
Ferguson        Matt             60  Male    Mo      MT      Deer Lodge Ralston; Historical School Dis
Ferguson        America          57  Female  Va      MT      Deer Lodge Warm Springs; State Hospital
Ferguson        Malvina F        38  Female  Cana    MT      Deer Lodge Warm Springs; State Hospital
Ferguson        Patk             83  Male    Irel    MT      Deer Lodge Warm Springs; State Hospital

MONTANA -- 1870 Census -- Deer Lodge
FERGERSON        Rorbert   Deer Lodge       63
FERGERSON        William   Deer Lodge       82