Thank you for the information on the parentage of Susannah Kilbourne. As far as I know, John Smith and Susannah Kilbourne did not have any children. They did not marry until 13 Feb 1843, and the youngest child I find living with them in the censuses, was Sarah Malinda, whom was born 6 June 1842. I assume she was the youngest child of John Smith and Sarah Jones, and that Sarah died soon after the birth of Sarah Malinda.
Also thank you for the marriage of Julia Ann Smith. In looking at census and various other records, it would appear that Hiram's surname was Dicey or Dicy. I believe their children included Susan, Ira L., Richard and Sidney A.