That is great that you will be up to find their graves. They are very well marked. If you have a chance and want to it would be fun to get together and compare notes. I live about 30 miles south of Sarona in a small town called Cameron. I am mainly doing the Hollister line, but have been following all the descendants of Stephen Hollister and Anna Sprague. I have quite a bit on some of the Clarks, but still have some questions. Let me know if you are interested.