The IRGW is the Jewish community for the Württemberg region of Baden-Württemberg. Its roots go back to 1832, the year in which the Jewish community in Stuttgart was formally founded. In 1912, the IRGW was recognized as a corporation under public law. Since its re-establishment in 1945, the IRGW has grown to more than 2,500 parishioners. In addition, there are numerous family members cared for by the IRGW who are not Jewish themselves.

The address book of the city of Augsburg 1891 contains the following entries: Heymann & Sohn, company: Maxim.-Straße A 28. - Heymann Julius, banker, company Heymann & Sohn, Max.-Str.A28. - Heymann Theodor, banker, partner in the company Heymann & Sohn, Bahnhofstr. 5/II. -Theodor Heymann ran a banking business in Augsburg at Maxilmilian-Str. A28. He moved to Munich at the beginning of 1900 (1901-1903). He was married to Fanny Heymann, née Bachmann. The couple had two daughters - Irma Heymann, born on June 1, 1884 in Augsburg and Anna Heymann, born on March 20, 1888 in Augsburg.

Julius Hirsch was born on April 11, 1872 in Berlin and was married to Ida Hirsch, née Arnfeld, born on May 2, 1872 in Bad Polzin (Pomerania). He was a fund broker and stamp dealer and initially ran a mail-order stamp business (without a store) at Burgstrasse 27. After moving out of Burgstrasse, Julius Hirsch took over a store at Kurfürstendamm 130 and had the stamp business with the stamp and art divisions entered in the Berlin commercial register in 1938. After the November pogrom of 1938, the closure of Jewish retail stores was enforced on January 1, 1939.

The address book of the city of Hanover from 1870 contains the following entry:Simon Alexander, Banqiergeschäft,Inhaber: Alexander und Moritz Simon,Schillerstraße 30.p. - Alexander Simon was born on July 4, 1798 in Memmelsdorf.He was married to Fanny Simon, née Worms, who was born in Frankfurt am Main in January 1804.

In Adolph Lehmann`s Allgemeiner Wohnungsanzeiger: nebst Handels- und Gewerbe-Adressbuch für die k.k. Reichshaupt- und Residenzstadt from the year 1896 contains the following entry: Eisenberg James, M.- u. Ph.Dr I. Löwelstr. 14.  -  James Eisenberg was born on June 15, 1861 in Prague.his parents were Eugen Eisenberg, born around 1826 in Berlin, and his wife Emilie Eisenberg, née Vienna, born on:May 31, 1837 in Prague. James Eisenberg was married to Karoline von Mauthner, born in Vienna on May 15, 1868.

In Adolph Lehmann`s Allgemeiner Wohnungsanzeiger: nebst Handels- und Gewerbe-Adressbuch für die k.k. Reichshaupt- und Residenzstadt from the year 1896 contains the following entry: Eisenberg James, M.- u. Ph.Dr I. Löwelstr. 14.  -  James Eisenberg was born on June 15, 1861 in Prague.his parents were Eugen Eisenberg, born around 1826 in Berlin, and his wife Emilie Eisenberg, née Vienna, born on May 31, 1837 in Prague. James Eisenberg was married to Karoline von Mauthner, born in Vienna on May 15, 1868.

In 1910, the building at Mohrenstrasse 34 was acquired by Bank für Thüringen AG, formerly Bankhaus B. M. Strupp, headquartered in Meiningen. Five years earlier, the brothers Gustav, Meinhard and Louis Strupp had transformed the family business, founded in 1742, into the public limited company Bank für Thüringen“. From 1920, business premises were also located in the adjacent property at Mohrenstra<e 36. In 1926, the „Bank für Thüringen“ was taken over by today's Deutsche Bank. Finally, the National Socialists deleted the bank from the commercial register in 1940.

The address book of the city of Berlin from 1875 contains the following entries: Linen and cotton goods factory, Sorau and Berlin, Bischofstr. 6.7 P. E., Inh. Waldemar Bendix u. Ww. Friedrike Bendix, née Cahnheim. - Bendix Waldemar, merchant, Bischofstr.6. 7. - Waldemar Bendix was born in Berlin on September 15, 1849. His parents were Moritz Bendix, born in Berlin on June 21, 1812 - died in Berlin on November 22, 1873 and his wife Friederike Bendix, née Cahnheim, born in Berlin in 1818, daughter of Wolff Laser Cahnheim and Emma Cahnheim.

The Bonn address book from 1900 contains the following entries: Herschel Max, pensioner, Kaiserstraße 59  -  Herschel Max Nachfolger (owner Rich. Wolffberg), Luxuspapier- und Schreibwaren-Fabrik, Fabrik und Detailhandlung, Wenzelg.39, (private residence there 1st floor).