Sorry this is so long in getting back to you.Here is the info you asked.I have more if you would care to get in touch with me directly, please feel free to do so.
Robert Nelson Simonton, b 5/08/1830 @ Leesburg, Carroll county, Ohio.Married Louisa H Rankin on 8/04/1898, second wife Sarah J. dunlap.
Robert Nelson (called R.N.) parents were Robert Thomas Simonton, b 1/1/1793 in Carroll County, Ohio.Married Sicily Vanderveek, on 4/25/1816, in Jefferson County, Ohio.He died 10/17/1875 in Deersville, Harrison County, Ohio.
R.N.'s parents were Thomas Simonton I (thought to be born in Ireland, left Ireland to come to U.S. approx. 1774).Info have re Thomas, b. 10/17/1757 Ireland, married Mary Clark on 12/18/1787.
I have info on children from this marriage (9), info on children of Robert Thomas(6) and info on R.N. children (12) if you are interested.
Hope this info is helpful to you.Bob and Merrilee Simonton