Karenvpr on Family Tree Circles

I am trying to locate names of descendants of John Coleman Hardesty and Mary Jane Fuller. John descended from from James Hardesty and Mary Ann Tuttle of Oberlin Ohio. Mary Jane is my grandmother's aunt, and her sister is my great-great grandmother, Isabelle Fuller Hardesty. Isabelle was married to James Frankin Hardesty, John's brother. I have all the info on my direct line...I knew many of my ancestors, including many of my grandmother's aunts and uncles, and grew up knowing all about them. But not until I moved to Colorado did I learn that Mary Jane and John had lived and farmed in Johnstown, CO, near where I now live. I have been to their graves, and I know the names of their children, which I have listed below. I have not found any more info on the children or grandchildren. There are several Hardestys buried in Longmont, but I cannot tell if I am related to them. I wonder if I have living relatives here in Boulder County or Weld County.
I can provide pictures of The graves I have found, if anyone wants them. I also have a picture of John and Mary Jane and some of their children, I think. All are adults in the picture. Thank you if you can help me fill out this branch of my family. for some reason, I feel very close to Mary Jane and want to know more about her.