Max Pincus and and his wife Rosa, née Eichenberg  moved from St. Johann an der Saar to Saarbrücken about the end of 1917. At that time, son Ludwig Pincus lost his life as a soldier in France during World War 1. Max Pincus also ran his insurance office in the Heilbronn apartment at Friedensstraße 31. Later, son Walter Pincus joined him. Walter Pincus and his wife Edith, née Oppenheimer emigrated to East Africa in 1939. Daughter Margarethe Pincus was in London in 1942.

A "Moritz Rosenstein - Landesprodukte", Paulinenstraße 10, later Marktplatz 3, is already mentioned in the records based on council records until about 1857. Whether "Isac Rosenstein, Landesprodukte" is the same company is not known, but it is obvious. The company address given above is that of Moritz Rosenstein.

Siegfried Gumpel settled as a lawyer in Heilbronn in 1901 and from 1923 headed the law firm of Dr. Gumpel, Koch & Dr. Scheuer.

Moses, Baruch and Max Reis together ran the woven goods wholesale and retail business Jakob D. Reis. Moses Reis was one of the co-founders of the Israelite religious community Adass Yeshurun, in which he also served as treasurer. One of the Torah scrolls in the possession of the community had been donated on January 11, 1933 by the then headmaster Heinrich Scheuer and Moses Reis.

In 1869, the brothers Wolf and Heinrich Schwarzenberger opened the company Schwarzenberger and Sons in Karlsruhe. In 1871 Heinrich Schwarzenberger moved the company, which had been taken over by his father Levi Schwarzenberger in Untergimpern, - trade with cotton (fabric) remnants to Heilbronn. In later times Adolf and Lothar Schwarzenberger were the owners of the company. Heinrich Schwarzenberger died in Heilbronn in 1893. His grave is located in the Jewish cemetery in Heilbronn.

A legal dispute of the company "Gebr. Stern und Rosenstein" with the city of Heilbronn in 1840 about a large lot of stored wool in the wool house, which in the opinion of the company was not sufficiently secured, proves the increasing immigration and settlement of Jewish businesses in the city of Heilbronn. The owners of the company "Gebr. Stern und Rosenstein" were Isaac Stern, S. J. Stern and Moritz Rosenstein. Later they were joined by Maier Frankenbacher, who acquired citizenship in 1860.

Louis Steigerwald founded the Steigerwald liqueur factory in 1869. Later, the sons Siegfried, Julius and Oskar Steigerwald inherited the liqueur factory "Steigerwald AG". From 1936, the so-called "Aryanization" of the company took place. At the end of 1937, the Steigerwald brothers transferred their shares to a Heilbronn bank under pressure. From then on, the company bore the name "Lucca". After the loss of the company, the Steigerwald couple moved to Berlin with daughter Suse Steigerwald. The daughter Edith Steigerwald had already emigrated to England in 1937.