States: Illinois: Edgar
David Cox and wife Sallie J are in Fayette Township, Vigo Co. IN for the 1870 census. Eva and Eddie are listed as children. Eva is 8/12 in June 1850 if the census taker asked the question right.
Arthur Van Houten has Willie Eddie as name of Eddie. I have no further record of this family. William and Jane seem to be mandatory names in these early Van Houten families.
David Cox is the son of John Thomas Cox and Jane Van Houten, she is a sister of Thomas Van Houten, father of Sarah J. Looks like a first cousin marriage.