I discovered Mary Ann (Coyan) and husband Jacob Garrett's grave near the back of the Holt Cemetary, which lies in a pasture field (literally!) about 3-4 miles NW of Gravity Iowa. My thanks to the lady at the Gravity post office who directed to the area of the correct pasture! This is one of the more ornate tombstones that I have seen. It was worth fighting 40+ MPH winds and threatening rain to find it.