Could you be a descendant of any of these people (from Austria/surrounding countries?)
Ignaz Mauthner married to Nina Kohn, my great,great grandparents, their son Siegmund Mauthner (1859-1940);
Alois Nicowitz married to Leopoldine Koch, my great, great grandparents, their daughter Augusta Nicowitz (1874-1970)
Siegmund and Augusta gave birth to my Granny - Marianne Mauthner - in 1899.
She married a Czech: Joseph (Josef) Dubsky (1897-1966) and had 3 children born in 1939-1944 in London, England.
My father, George, had 6 daughters, of which I am the 2nd.