Hermine Feist was married to the merchant and art lover Otto Feist who, after his death in 1912, left his collection of Old Masters, Italian furniture, small bronzes, majolica and stonework to their two sons Ernst and Hans.

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.

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.