1870: At Home With The Ketchams
By 1870, the Ketcham household has expanded but not without loss. Daughter Elizabeth died at age 16 in 1868. Mary's elder sisters have joined the family and the census notes that there are also 3 German farm laborers in the household.
1870 US Census, NY

Ketcham David, 46, M, W, Farmer, 10,000 (real estate value, 500 (personal estate), New York (birth), 1 (male citizen above 21)
Ketcham Mary, 48, F, W, Keeping House, New York (birth)
Ketcham Aaron O, 21, M, W, Farmer, New York, 1
Oakley Elizabeth, 51, F, W, No Occupation, New York
Oakley Harriet, 56, F, W, No Occupation, New York
Haller Christina, 40, M, W, Farm Laborer, Germany, 1(father foreign birth) 1 (mother foreign birth)
Miller John, 38, M, W, Farm Laborer, Germany, 1, 1
Miller Henry 40, M, W, Farm Laborer, Germany, 1, 1
