The Fürth address book of 1859 contains the following entry - Friedrichstraße 312g - Rosenthal Emanuel, merchant and part owner of the manufactory Ullmann & Rosenthal. Emil Rosenthal was a board member of the Israelite religious community, in the poor relief association, from 1869 municipal representative of the city of Fürth, second chairman of the trade committee and committee member of the trade association, as well as a member of numerous other local associations.

Kurt Clavier was an interior designer, owner of an art furniture factory and  workshops for the complete interior design. In a directory of the Hamburg furniture and home furnishings industry from 1927, the following entry can be found - Kurt Klavier, Kunstmöbelfabrik, Werkstätten für den gesamten Innenausbau, Ferdinandstr. 29/33. In a similar directory from 1932, the plastic furniture factory can no longer be found and the address given is "Harvestehuder Wed 11". Kurt Clavier  took over the villa built in 1872 at Harvestehuder Weg 11 from S. Löwenstein.