His name was spelled with an "i" in marriage records as well as the census.
Residences & events:
11/7/1850 Old Town (North side), McLean Co, IL. At age 51, born PA, he had a 31 year old wife named Elizabeth, born VA, and 9 children, rangin in ages from 21-3, all born in OH except the 3 year old in IL.
8/6/1860 Blue Mound Twp, McLean Co, IL. The census captured David S at age 60, a farmer with property worth $2100/1300. His 51 year old wife was Amam but should be Anna. They lived alone but next door were Greenmans, in-laws of Anna's son John.