1850 Census
Fergason     Jerrome         36  NY      IL      McHenry; Algonquin
Fergason     Jerrome         36  NY      IL      McHenry; Algonquin
Forguson     Thos            10  Scot.   IL      McHenry; Benton
Ferguson     Ellen           50  Scot.   IL      McHenry; Grafton
Ferguson     Ellen           50  Scot.   IL      McHenry; Grafton
Ferguson     James           19  Scot.   IL      McHenry; Grafton
Ferguson     James           19  Scot.   IL      McHenry; Grafton
Ferguson     John            24  Scot.   IL      McHenry; Grafton
Ferguson     John            24  Scot.   IL      McHenry; Grafton
Ferguson     Peter           50  Scot.   IL      McHenry; Grafton
Ferguson     Peter           50  Scot.   IL      McHenry; Grafton
Ferguson     Peter T         26  Scot.   IL      McHenry; Grafton
Ferguson     Peter T         26  Scot.   IL      McHenry; Grafton
Ferguson     John            25  Scot.   IL      McHenry; Seneca
1860 Census
Furgeson     Esther          33  Female  Ny     IL      Mchenry Algonquin
Furgeson     Thomas          20  Male    Scot   IL      Mchenry Burton
Ferguson     Robert          52  Male    Irel   IL      Mchenry Chemung
Furgeson     William         47  Male    Irel   IL      Mchenry Dunham
Furgerson    John            38  Male    Scot   IL      Mchenry Grafton
Furgason     T J             42  Male    Ny     IL      Mchenry Nunda
1870 Census
Ferguson     John            42  Male    Scot   IL      Mchenry Algonquin
Ferguson     Robert          60  Male    Irel   IL      Mchenry Chemung
Ferguson     L R             34  Male    Pa     IL      Mchenry Dunham
Ferguson     Rebecca         25  Female  Pa     IL      Mchenry Dunham
Ferguson     W F             26  Male    Scot   IL      Mchenry Marengo
1910 Census
Ferguson        Zaceriah         79  Male    Pa      IL      Mchenry 2-Wd Harvard
Fugeson         Jane             38  Female  Il      IL      Mchenry Hartland Twp
1920 Census
Fergeson        Hannah           49  Female  Il      IL      Mchenry 2-Wd Woodstock
Furgerson       Ira              33  Male    Il      IL      Mchenry Chemung
Ferguson        Jane             48  Female  Il      IL      Mchenry Hartland
Forgeson        Sadie            46  Female  Il      IL      Mchenry Marengo
Ferguson        Mary F           60  Female  Ny      IL      Mchenry Mchenry