Born in Schleswig-Holstein, he was trained in Germany and in Paris under Labrouste (from whom he derived his Classicism). Settling in the USA in 1848, he developed a thriving practice in NYC. His work was eclectic, ranging through Rundbogenstil, Gothic, French Second Empire, Italianate, Picturesque asymmetrical, to a nondescript, even dour manner from which French influences, however, were not entirely obliterated. He designed several large blocks of town-houses in NYC, including the Rebecca Jones group, Fifth Avenue and 55th Street (1868–70—destroyed), which were influential. In the 1870s and 1880s his career was closely bound up with the rapid growth of Manhattan.
Journal of the Society of Architectural Historians, xiv/1 (Mar. 1955), 18–25;Placzek (ed.) (1982);Jane Turner (1996)