Are you certain that Elizabeth was born in Baltimore and not in Germany? The Dohme family emigrated to Baltimore supposedly in 1852 from Obernkirchen, Germany. I got this info. from the book The Dohme Family 1244--1986 and The Memoirs of Frances Dohme Cockey.
My Dohm family moved to Baltimore in the early 1920s. My grandfather didn't think we were related to the Dohme's who lived there. However, after reading the above mentioned book, I believe we are related.
I would be very interesting in knowing more about Elizabeth.