Hello Philip,Looking at Betty's msg this am and looked at 1850 Federal Census actual copy of Ancestry.com just now for Illinois, Rushville, Schuyler:
Search results yield several McKee but all in 3 households as follows:
William McKee ?6 KY............Value of RE 10000........ Cassie McKee..66..PA Joel McKee....25..Iowa James Matheny..30..Iowa George Lester..22..England
The volunteer transcriber saw William's age as 26.The second digit is 100% a 6 but I see the first digit as impossible to read.This is why I made note of the 10000 value in real estate which is very high and a lot for a younger man I think.So maybe was 66 but that is a guess on my part and not based on any fact.
The other family is a young Henry McKee and wife Mary and a son JOEL (note Joel as name of above son of William)
Third, a 68 year old Hannah McKee living in house of John Hiles.