Dr. Richard Landauer founds the "Delphin Verlag" in 1911 in Munich, in 1933 it is relocated to 55-57 Theaterstra e in Landshut due to the family's move to the parents-in-law (Cilly and Adolf Hirsch). Together with Helmut Teichner, Dr. Richard Landauer becomes one of the managing directors of the Hirsch department store (Hermann Tietz successor).

Dr. Richard Landauer founds the "Delphin Verlag" in 1911 in Munich, in 1933 it is relocated to 55-57 Theaterstra e in Landshut due to the family's move to the parents-in-law (Cilly and Adolf Hirsch). Together with Helmut Teichner, Dr. Richard Landauer becomes one of the managing directors of the Hirsch department store (Hermann Tietz successor).

Dr. Richard Landauer was born in München in 1892, he later became a publisher (founded "Delphin-Verlag" in 2011), this publishing house is not identical with the children's and non-fiction publishing house "Delphin Verlag based in Küln.

In 1922, he married Edith Landauer, née Hirsch (daughter of Cilly and Hirsch (daughter of Cilly and Adolf Hirsch); children: Eva-Maria, born on December 26, 1922 in Munich; Stefan Klaus Robert on January 9, 1925 in Munich; Robert Felix on February 18, 1927 in Munich.

The following entry can be found in the address book of the city of Posen from 1875: Friedländer Israel, Saaten- und Spiritushändler, Kleine Gerberstraße 11.  -  Israel Friedländer, born 1841 - died 1922 was married to Betty, née Kaliphary. One of their daughters, Lea, born on October 9, 1868 in Posen, was married to Alfred Feilchenfeld, born in 1860, headmaster of the Israelite secondary school in Fürth from 1900 until his death in 1923. The couple had six children: all of them were able to emigrate in time.

From 1914 to 1918, Paul Ottenheimer (born in Stuttgart in 1873, died in Darmstadt in 1951) lived in this place and worked as court conductor at the former court theater in Darmstadt. On June 2, 1914, he was awarded the title of "Hofrat" and on March 13, 1917, the Knight's Cross of the Order of Ludwig.

With great personal commitment to the creation of housing and other social facilities, the banker, reformer and cooperative Pfeiffer contributed with major projects between 1875 and 1915 to ensuring that Stuttgart remained a community without major social problems even during industrialization.

Artist and writer, the only surviving member of his family. In his autobiography  „The Making of an Englishman“,  which was published in London in 1960 but not translated into German until 1992 after his death, he  describes his life, his origins and family, and his transformation into an Englishman alongside his wife, Lady Diana Croft, whom he met in April 1936.