Note: In the 1850 census Isaac Clark was 42 years old and a farmer in Harrison township in Gallia County, Ohio. At that time Isaac owned $1,000.00 worth of real estate, which is likely the value of the farm.
According to the report his wife Ann (38) and all of his children were born in Ohio. The children at that time were Samuel V. 18, farmer; Jacob S. 16, farmer; Jeptha 15, farmer; Josephus L. 13; Lewis D. ten; Mary A. seven and Sarah C. one. All of the children except Mary and Sarah had attended school during the year.