Appears to be a memorial to a Holocaust Family by name of Steiner (Steinerova)
Arnost Steiner - Holocaust Victim - Deported from Prague -> Terezin -> Auschwitz (Murdered)
Inge Steiner (Steinerova) - Holocaust Victim - Deported from Prague -> Terezin -> Auschwitz (Murdered)
Marie Steiner - Died in Syosset, New York, USA
Frantisek Steiner - Died in Londyn (Suspect London, England - Polish Community in London, England)
Trude Steiner - Died in Londyn (Suspect London, England - Polish Community in London, England)