One of the more interesting items discovered among Mary’s belongings is this letter from a cousin in Germany. Dated in 1905, the letter appears to have been written in response to correspondence that Heinrick’s parents received from Mary. She would have been 27 at the time and he was 15.
Since Heinrick’s last name is “Von Bobart”, I believe Mary’s father, John H. Rumping, and Heinrick’s mother, whose maiden name is unconfirmed at this time, were probably siblings.