German sculptor working in the Neo-Classical style. In 1802 he went to Rome and produced a number of mythological works at this time. While in Rome, Hagemann had been an associate of Thorvaldsen and had absorbed the ideal of heroic Classicism favoured by the circle that had formed around the German painter Asmus Jacob Carstens. Hagemann's early death makes it difficult to say whether he would have proved a serious rival to the other Berlin sculptors of the time. //