Career
He was subsequently apprentice at prominent banker Julius Königswärter, who introduced him into cultural salons in Amsterdam. This bank, together with a number of other firms, played a significant role in financing the building of new railroads in the United States. He was a patron of amateur drama in Amsterdam, and stimulated the development of the (later Royal) Dutch National Theatre Company (Vereeniging Het Nederlandsch Tooneel), soon the only major theatre company in the city.
lieutenant played at the Municipal Theatre and the Grand Théatre.
Wertheim was intimately involved in the rebuilding of the Municipal Theatre on the Leidseplein square after it burnt down in 1890. He was a mason. He was involved in a large number of Jewish communal organisations in Amsterdam, including being the president of the Jewish community.
He is commemorated in the Wertheimpark in Amsterdam East, which contains a monument dedicated to him. He had eight children, of whom three died in childhood.