I also am trying to identify Katharine Selmser. I have a blanket that woven by her which has been passed down thru generations to Katharine, Katherine or similar names.
The last person I have been able to trace is my great grandmother, Katherine Hollenbeck Briggs. Her father was Phillip Hollenbeck and her mother, Magdalen (no maiden name), Hollenbeck. If you are still on Ancestry.com, I hope I will hear from you.