Oskar Olschewski was born in Ortelsburg/East Prussia to a working-class family. He moved to Berlin and married Selma Bergmann. He was a trained machinist and worked at the Army Material Office in Berlin-Spandau. There a factory group of the

Heinz Berthold Oberländer was born in Berlin on October 7, 1906, the son of Ludwig Oberländer and his wife Emma, née Kraemer.

Flora Oberländer was born in Berlin on August 29, 1900, the daughter of Ludwig Oberländer and his wife Emma, born Kraemer.

Emma Kraemer was born in Vienna on October 20, 1861, the daughter of Ludwig Kraemer and his wife Flora Nesimögen.

The name is misspelled on the stone.