Leopold Erlenbach was born in Fürth on November 13, 1831. His parents were Seligmann Ellern-Erlenbach and Marianne Ellern-Erlenbach,née Baburger. Leopold Erlenbach learned gold beating, became a master gold beater and founded his own company in 1854. In 1928, the Leopold Erlenbach company was granted a patent for the production of especially durable gold leaf made of a platinum-gold alloy. In 1927, Ella Erlenbach was the owner of the Leopold Erlenbach company.

The company "Raff & Söhne", originally founded in 1830 in Jebenhausen near Göppingen by David Raff, born in 1765 in Illereichen near Memmingen, was at that time still a trading business with weaving goods (until 1840). From 1840 on, Isak Raff (son of David Raff) and Simon Raff (son of Moses Raff and thus a cousin of Isak) joined the company "A. Gutmann & Co", which was newly founded at that time by Abraham Gutmann, as partners. The company flourished and in 1861 the company moved to Göppingen. In the same year the company was separated.

The private bank Ottensooser & Co was "Aryanized" in 1936.

In the address book of the city of Munich from 1893 are the following entries  -  Bernheim Gab. u. Söhne, Leder-, Wildhäute-, Thran- u. Knoppern-Lag., Fürstenfelderstr.9.            Bernheim Emil, Lederhändler Firma Gabr. Bernheim u. Söhne, Residenzstr.17,  -  Bernheim Hermann, Leather merchant company Gabr. Bernheim u. Söhne, Thierschstr.19

The former home of the Jewish department store owner family Emil Hirsch stood at Gubener Straße 16, today 15a. After the Aryanization of the department store in 1935 and the forced sale of the department store in the former Regierungestraße 2/3 (today Oderturm), Emil Hirsch was deported to Sachsenhausen.

The renovated building is a student dormitory, owner and landlord Drei Kronen e.V., the house itself operated by the student fraternity "Corps Silesia Breslau".

After 1850, the "Manufakturwaren M. Hirsch, Regierungsstraße" can be found in official documents.  Emil Hirsch, the brother of the first owner Max Hirsch, runs the business from 1891 together with his wife Emma and his sons Alfred and Bruno. Later co-owner was his son-in-law Walter Bendit.
In the 1920s, the Hirsch department store was the largest store for women's and men's fashions in Frankfurt (Oder).

The gentlemen Zirndorfer & Mayer operated an export business in Nuremberg.