1870 Census
Ferguson     W G             44  Male    Pa     MT      Madison Virginia City
Ferguson     James           39  Male    Ny     MT      Madison Virginia City P O
1900 Census
Ferguson        Roland           31  Male    Mo      MT      Madison Ferguson
Ferguson        Simpson          39  Male    Cana    MT      Madison Union Twp
1910 Census
Ferguson        Jeff D           49  Male    Mo      MT      Madison Pony Pct
Ferguson        Roland A         40  Male    Mo      MT      Madison Pony Pct
Ferguson        Simpson          41  Male    Cana    MT      Madison Virginia Pct
Farguson        Thomas A         46  Male    Scot    MT      Madison Washington Bar Pct
1920 Census
Ferguson        Simpson M        52  Male    Ny      MT      Madison 1-Wd; Virginia City; Union

MONTANA -- 1870 Census -- Madison
FERGUSON         James     Madison         242
FERGUSON         W.G.      Madison         271