Biografia   

(b Budapest, ?1817; d 2 Oct 1885). American impresario. He probably arrived in America about 1842. He managed Henri Herz (1846–9), Camillo Sivori (1847–8), Henriette Sontag (1852–4), Thalberg (1856–8) and Vieuxtemps (1857–8). From 1857 to 1860 Ullman and Maurice Strakosch, partly financed by Thalberg, produced opera at the Academy of Music in New York, engaging such singers as Anna de La Grange, Elena d’Angri, Marietta Piccolomini and Adelina Patti. Ullman

fonte: grove