Leonhard Weidinger

Historian; 2005–23 provenance researcher at the MAK, Vienna, and collaboration in several online projects on behalf of the Commission for Provenance Research; 2011–13 and 2016–17 collaboration in "German Sales" project by the Getty Research Institute, Los Angeles; 2017–19 collaboration in projects at the Zentralinstitut für Kunstgeschichte, Munich; 2014–18 board member, 2017–18 chairman of Arbeitskreis Provenienzforschung e.V.; numerous publications and productions in various media; courses at the University of Vienna; research focuses: Austrian cultural history in the nineteenth and twentieth century, digital media in the study of history; further information: leonhard.weidinger.wien.

The engineer Samuel Bauer, the proprietor of an engineering office, was married to Gittel Breine, née Goldstein (née 1880 in Brody, Galicia). The couple lived from 1927 at Julienstraße 58 in Vienna's 18th district.

Ferdinand Bloch was the youngest of six children of the sugar factory owner and banker David Bloch and his wife Marie, née Straschnow. He attended the Handelsakademie in Prague and joined the family business in 1881.

After the death of his father Adolf Duschnitz in 1909, Willibald Duschnitz, who married Jenka, née Löff, in 1907, inherited his painting collection, a villa in the Cottageviertel in Vienna's 19th district, and the Erste Österreichisch-Ungarische Filzfabrik in Achau south of Vien

Johann Nikolaus Richard Ernst, son of a businessman, went to school and university in Prague and obtained a doctorate in art history and classical archaeology in 1909.

Immendorf Castle in the northern Weinviertel, mentioned for the first time in records in the thirteenth century, was originally a two-storey complex around a rectangular courtyard with square towers. It was restored and modified in the late nineteenth century.

The bank clerk Emil Iwnicki and his wife Amalie, née Wunderlich (born 15 February 1893 in Przemysl), lived at Schulz-Straßnitzky-Gasse 3 in Vienna's 9th district.

Anna Kutscher from Galicia was the widow of the businessman Josef Kutscher (1880–1933). After the annexation of Austria she was considered under Nazi law to be a Jew and subject to the regime's restrictions.

Karl Mayer was initially a partner in the company V. Mayer & Söhne founded by his grandfather and later an industrialist in Vienna. On 3 July 1890 he married Monika von Goldschmidt (1862–1908) and on 8 May 1891 their only son was born.

Wilhelm Müller-Hofmann was born in Brünn / Brno and grew up in Bavaria. After graduating from the Gewerbliche Fortbildungsschule he studied at the Academy of Fine Arts in Munich.

After his father's death in 1899, Heinrich Rothberger, who trained as a tailor and commercial manager, took over his textile company Jacob Rothberger and department store on Stephansplatz in Vienna together with his brothers Moritz and Alfred.

Hermine Schütz was married to the doctor Emil Karel Schütz (born 1853 in Prague).

Sonnberg Castle, mentioned in records for the first time in the twelfth century, was rebuilt in 1596 in the Renaissance style as a three-storey building with a gate tower and rectangular courtyard.

Isak Wunderlich was a master tailor and lived with his wife Scheindel, née Pohl (born 24 May 1865), at Kluckygasse 15 in Vienna's 20th district. After the annexation of Austria to the National Socialist German Reich, they were persecuted as Jews.

As one of the measures by which the Nazi German Reich pursued the gradual humiliation, expropriation, expulsion and murder of Jewish persecutees, in 1939 the Nazi regime ordered the compulsory surrender of precious metal objects, jewels and pearls.