In her time as a passenger liner, many famous international personalities sailed on "Kronprinz Wilhelm". These included the lawyer and politician Lewis Stuyvesant Chanler Jr. (1903), the opera singer Lillian Blauvelt (1903), the theatrical manager and producer Charles Frohman (1904) who died in 1915 aboard ; businessman John Jacob Astor (1906) who died in 1912 aboard ; the "most picturesque woman in America," Rita de Acosta Lydig, and her second husband, Captain Philip M. Lydig (1907); the author Lloyd Osbourne (1907); the star conductor Alfred Hertz (1909); the ballerina Adeline Genée (1908); the theatrical and opera producer Oscar Hammerstein together with the conductor Cleofonte Campanini and the opera singers Mario Sammarco, Giuseppe Taccani and Fernando Gianoli-Galetti (1909); and the multi-millionaire, politician and lawyer Samuel Untermyer (1910).