Their 4th daughter was Emily J Knecht
Emily J Knecht married Dr. Edward Jacob Freeman (b Dec I8, I851)
Dr E J Freeman and Emily J (Knecht) Freeman had 4 children; Only one lived to be an adult - Anna ("Nan") Elizabeth Freeman
RS Mueller 1 lost his father (a doctor) 2 years before, and "Nan" Freeman also had a father who was a doctor (that being Dr E J Freeman)
That would explain the connections to US Shipping Board
And the move to Baltimore
And the sudden jolt into all the "high society" headlines
Observe RSM1 lost parents; Mrs. RSM1 was only child. Her dad's (Dr. EJ Freeman) entire legacy was them. RSM1 is the son he never had.
But I am saying they could not work for 7 weeks, sail on a luxury ship over to Europe for a month to watch a horse race, and leave all 4 kids at home, who were enrolled in top private schools, while they prepared to build on #GibsonIsland .