1900 Census Ferguson John W 46 Male Ia IA Sioux Buncombe Twp Ferguson Jason 32 Male Scot IA Sioux Washington Twp 1910 Census Ferguson John W 52 Male Il IA Sioux 1-Wd Hawarden Ferguson Robert 40 Male Il IA Sioux E Orange Twp Ferguson Peter 53 Male Scot IA Sioux Reading Twp