I don't think I can help you with ISH in Oregon. I don't have anyone in my database who lived there.
Here is descendancy that I know: Jacob Ish b. Apr. 5, 1784, TN mar. Mary SMART b. 1810 TN. Children: Missouri Ann, John B. b. 1807 TN, Martha C. b. 1810 TN, Minerva Elizabeth b. 1812, Carroll Whitfield b. 1815 TN, Mary b. 1817 Saline Co., MO. Carroll John William Roy Vernon Robert Vernon