Renatha Maschke was German and Swedish and was born about 1835 and died about 1912 in Russia.
Renatha Maschke married August Dzak.
August Schaak and Renatha Mashke Schaak had a daughter: Renatha Schaak Glaesman (aka Renatha Dzak) , born December 11, 1865.
The name Schaak is spelled many ways. Dzak, Shook, Schak Kujat, Dischak…
Renatha Maschke Dzak was the maternal grandmother of Johann Glaesman.