Hi Jean
Yes I would be related to Mary Catherine Swartzbaugh. Her great grandfather was John A. Schwartzbach who was my ggg grandfather. My lineage is thru John's son William and his son Allen Monroe Swartzbaugh. I have a picture of John Schwartzbach, if you would like that please contact me directly at alan_swartzbaugh@hotmail.com
and I would be happy to send it to you.

Alan