Robert Ambler and Mary L Bartelson are Cory’s 3X Great Grandparents on his maternal side. They are the parents of Cory’s Great Great Grandmother Mary Ambler, who is the mother of his Great Grandfather Harry Seibert who is the father of his grandmother Mildred Seibert.
The Ambler family is a Quaker family and were early settlers in Pennsylvania. Quaker families are well documented thanks to their church records which made Robert and his family easy to track. Robert’s wife Mary was listed in all online sources as Bartleson and the daughter of Mark Bartleson and Mary McKnight and until I completed a research project in February of 2026 to validate that information, I wasn’t sure. I can now say as a result of that research that Mary is most certainly the daughter of Mark Bartleson and Mary McKnight
One thing worth thinking about in this generation is that Mary’s brothers fought in the Civil War. As one can imagine, this is a challenging situation for the Society of Friends who are both anti violence and anti-slavery. I have not yet seen evidence that any of Robert’s brothers were part of the war, but I did find this piece interesting and I do wonder how some of the conversations with the family might have gone.
Cory and Nicole Family History 