Here is the 1870 US Census for my great great great great grandfather Henry Emery still living in the township of Weller, Henry County, Illinois. Henry was living with his second wife, Hannah (Gaffney) along with someone named Laura, who appears to be 3 years old. It's not likely Laura was born to Henry and Hannah so I would guess she is probably a niece or granddaughter.
Update: February 10, 2011
Should have corrected this October 20, 2010 because I had located the 1880 US Census for Hannah, which explained that Laura was her granddaughter.