Some US census data:

1900 Valley Centery, Sedgewick Co, Kansas
Thomas Corkill June 1839 60 Married 32yrs born Eng (sic) Immig 1841 in US 59yrs
Martha A. Sept 1847 52 Married 32yers mother of 6ch-6lv New York
Chas E. Aug 1876 23 Illinois
Robert Oct 1877 22 Illinois
Besslie L. Jan 1884 46 Kansas

1880 Union, Sedgewick Co Kansas
Thomas Corkell 41 Ohio
Marcia 34 New York
Della 11 Illinois
Edward 8 Illinois
Charles 5 Illinois
Robert 2 Illinois