I would like to know if someone can shed some light of the background of

Sarah DATZ born 2.12.1902
and
Herman DATZ born 28.11.1896
Both lived in Vienna had one daughter
In 1939 they joined the ill fated that became to be known Kladovo -
Sabac transport to Palestine and
were killed by the German in Yugoslavia in October 1941.

Should any one have some background information of the family or
existing relative , please let me know
With many thanks
Leo Dortort